Motor oil for the 8: what 'The Car Doctor' (and Castrol) say…
02-15-2007, 10:36 PM
#76
Originally Posted by puch96
Don't fall into your own trap now...... DO YOU HAVE ANYTHING TO BACK YOURSELF UP OTHER THAN WHAT PEOPLE THINK AND SAY?
Well some of the facts are simple. Lets see Synthetic oil last longer than Mineral, thats a fact. (or should I say Group IV/V oils last longer?) Well at least when you're comparing between 2 brands of good Dino and Synthetic.
what about impurities ? Which one has more impurities ? Answer is simple.
Is the base-stock that determines if its Synthetic or not. Now some companies name Group III oil Synthetic (Castrol Syntec, for example). RG already explained how it works. It went thru something called hydrocracking.
Too much to type, Im a pretty lazy person so I'll just stop for now.
For most, Dino oil will do just fine. but again please dont bash Synthetic (not you puch96)
Last edited by nycgps; 02-16-2007 at 07:10 AM.
02-15-2007, 10:54 PM
#77
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Originally Posted by nycgps
Havent seen any ? *Sigh*
The recent recall HAS somethign to do with the side housing wear out. you can say that it has to do with Mazda's programming and nothing to do with Synthetic oil really.
And REMEMBER, there's some oil in the system if you just drain from the pan. about what 3 quart left?
The recent recall HAS somethign to do with the side housing wear out. you can say that it has to do with Mazda's programming and nothing to do with Synthetic oil really.
And REMEMBER, there's some oil in the system if you just drain from the pan. about what 3 quart left?
#1 Cars that leak oil! I am not putting $6 a quart on cars that will probably leak that out in two weeks
#2 Cars that burn oil! (rotaries) I am not putting $6 a quart on cars that will spit it right back out within 1000 miles.
For all other cars, I love it. I love to be able to track the car for 6000 miles and not having to change oil. It's more expensive, but saves so much in time. After all the mileage that you put on it, it's really not that much more. It just doesn't seem like a wise choice to the pocket on the rotaries. It's your money, I am sure my car will run just fine without it. Since I change oil at 3000 miles on the dot anyway, it makes no difference to me.
02-15-2007, 11:00 PM
#78
Originally Posted by tmak26b
I never said synthetic oil are bad. Matter of fact, that's all I use except on two types of cars.
#1 Cars that leak oil! I am not putting $6 a quart on cars that will probably leak that out in two weeks
#2 Cars that burn oil! (rotaries) I am not putting $6 a quart on cars that will spit it right back out within 1000 miles.
For all other cars, I love it. I love to be able to track the car for 6000 miles and not having to change oil. It's more expensive, but saves so much in time. After all the mileage that you put on it, it's really not that much more. It just doesn't seem like a wise choice to the pocket on the rotaries. It's your money, I am sure my car will run just fine without it. Since I change oil at 3000 miles on the dot anyway, it makes no difference to me.
#1 Cars that leak oil! I am not putting $6 a quart on cars that will probably leak that out in two weeks
#2 Cars that burn oil! (rotaries) I am not putting $6 a quart on cars that will spit it right back out within 1000 miles.
For all other cars, I love it. I love to be able to track the car for 6000 miles and not having to change oil. It's more expensive, but saves so much in time. After all the mileage that you put on it, it's really not that much more. It just doesn't seem like a wise choice to the pocket on the rotaries. It's your money, I am sure my car will run just fine without it. Since I change oil at 3000 miles on the dot anyway, it makes no difference to me.
for cars that burn oil, hmm, I didnt even check my oil level, cuz I know I will change it about no more than 3K miles. sometimes even 1.5K miles (if I dont like the feeling I just change it)
It sounds like a waste of money, but I enjoy the process alot. so why not ?
02-15-2007, 11:01 PM
#79
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I think that if we want to make educated guesses or statements, whatever the case, we have to study in depth "INTERNAL COMBUSTION ENGINES".... which takes several years of college.
Then we can start investigating the effects of different types of lubrication, thus in this case, our topic or discussion (synthetic vs. dino).
If we understand the Otto cycle, we can see that it is different than the Wankel. The Wankel could sometimes be thought as a 2-cycle engine. ..... anyway.... I have no point....oh wait... don't use synthetics in a 2-cycle engine. If you are supposed to inject oil into the combustion chamber, why burn off your expensive "magical" stuff. (notice the sarcasm here)...
I would justify certain applications for synthetics (such as high engine stress during racing). But since most of us don't race for a living, synthetics are probably not needed. Again, it could all be just a marketing scam.
Then we can start investigating the effects of different types of lubrication, thus in this case, our topic or discussion (synthetic vs. dino).
If we understand the Otto cycle, we can see that it is different than the Wankel. The Wankel could sometimes be thought as a 2-cycle engine. ..... anyway.... I have no point....oh wait... don't use synthetics in a 2-cycle engine. If you are supposed to inject oil into the combustion chamber, why burn off your expensive "magical" stuff. (notice the sarcasm here)...
I would justify certain applications for synthetics (such as high engine stress during racing). But since most of us don't race for a living, synthetics are probably not needed. Again, it could all be just a marketing scam.
02-15-2007, 11:16 PM
#80
Originally Posted by puch96
I think that if we want to make educated guesses or statements, whatever the case, we have to study in depth "INTERNAL COMBUSTION ENGINES".... which takes several years of college.
Then we can start investigating the effects of different types of lubrication, thus in this case, our topic or discussion (synthetic vs. dino).
If we understand the Otto cycle, we can see that it is different than the Wankel. The Wankel could sometimes be thought as a 2-cycle engine. ..... anyway.... I have no point....oh wait... don't use synthetics in a 2-cycle engine. If you are supposed to inject oil into the combustion chamber, why burn off your expensive "magical" stuff. (notice the sarcasm here)...
I would justify certain applications for synthetics (such as high engine stress during racing). But since most of us don't race for a living, synthetics are probably not needed. Again, it could all be just a marketing scam.
Then we can start investigating the effects of different types of lubrication, thus in this case, our topic or discussion (synthetic vs. dino).
If we understand the Otto cycle, we can see that it is different than the Wankel. The Wankel could sometimes be thought as a 2-cycle engine. ..... anyway.... I have no point....oh wait... don't use synthetics in a 2-cycle engine. If you are supposed to inject oil into the combustion chamber, why burn off your expensive "magical" stuff. (notice the sarcasm here)...
I would justify certain applications for synthetics (such as high engine stress during racing). But since most of us don't race for a living, synthetics are probably not needed. Again, it could all be just a marketing scam.
one of my friend got a rabbit the other day, I never study about VW cuz Im not into German cars ... but she asked me to check it for her so I took the manual and start reading. Hmm interesting thing is that they burn oil as well ! Now I wanna study a bit of German cars
02-15-2007, 11:20 PM
#81
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Originally Posted by nycgps
could be, but I wanna give my engine the best. even if its just a tiny bit better. I still gonna do it.
one of my friend got a rabbit the other day, I never study about VW cuz Im not into German cars ... but she asked me to check it for her so I took the manual and start reading. Hmm interesting thing is that they burn oil as well ! Now I wanna study a bit of German cars
one of my friend got a rabbit the other day, I never study about VW cuz Im not into German cars ... but she asked me to check it for her so I took the manual and start reading. Hmm interesting thing is that they burn oil as well ! Now I wanna study a bit of German cars
02-15-2007, 11:22 PM
#82
Gasoline. Rabbit. 
brand new.
The car is pretty good imo. but parts are )_#*$)#@*$#@)*$ expensive.
Oil filter alone cost me 37 bucks *K&N* It asks for 5w40 but I cant find any that time, so I just gave her some 5w30 which the manual also saids OK.
After that I ordered her some Redline 5w40 oil. I think its on some UPS truck coming to my house now.
brand new.The car is pretty good imo. but parts are )_#*$)#@*$#@)*$ expensive.
Oil filter alone cost me 37 bucks *K&N* It asks for 5w40 but I cant find any that time, so I just gave her some 5w30 which the manual also saids OK.
After that I ordered her some Redline 5w40 oil. I think its on some UPS truck coming to my house now.
Last edited by nycgps; 02-16-2007 at 07:09 AM.
02-16-2007, 02:59 AM
#83
4th batch : Apr 03'
i think this thread might help a bit:
https://www.rx8club.com/rx-8-discussion-3/syn-oil-how-many-miles-99495/
https://www.rx8club.com/rx-8-discussion-3/syn-oil-how-many-miles-99495/
02-16-2007, 07:43 AM
#84
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Originally Posted by nycgps
could be, but I wanna give my engine the best. even if its just a tiny bit better. I still gonna do it.
one of my friend got a rabbit the other day, I never study about VW cuz Im not into German cars ... but she asked me to check it for her so I took the manual and start reading. Hmm interesting thing is that they burn oil as well ! Now I wanna study a bit of German cars
one of my friend got a rabbit the other day, I never study about VW cuz Im not into German cars ... but she asked me to check it for her so I took the manual and start reading. Hmm interesting thing is that they burn oil as well ! Now I wanna study a bit of German cars
02-16-2007, 07:48 AM
#85
Originally Posted by tmak26b
It's your choice, I am just saying I don't see the justification of going to synthetic on rotaries. If my motor starts "ticking" or whining, maybe then I would say you are right. As of right now, my car is happy with 5w30 Castrol GTX changing every 3000 miles to be exact. I also like the indicator of when it turns really black.
I have nothing against the Dino oil use, its just that certain people wants to attack Synthetic for no special reason, they dont bash it for cost factor, just bash whatever like BS carbon build up(which came from the GAS they put in) BS oil rubber-o-rings issues(fixed 30 something yrs ago) and some other BS.
If they wanna attack cost factor then yeah .... I guess Synthetic cant win. but everything else ..... (IMO)
Oh but by the way, turning black means the oil is doing its job properly, even 1K miles your oil should be completely black because it absorbs all the comtainments on the Eccentric shaft and bearings.
02-16-2007, 11:23 AM
#86
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Originally Posted by nycgps
Yeah I guess to each of their own.
I have nothing against the Dino oil use, its just that certain people wants to attack Synthetic for no special reason, they dont bash it for cost factor, just bash whatever like BS carbon build up(which came from the GAS they put in) BS oil rubber-o-rings issues(fixed 30 something yrs ago) and some other BS.
If they wanna attack cost factor then yeah .... I guess Synthetic cant win. but everything else ..... (IMO)
Oh but by the way, turning black means the oil is doing its job properly, even 1K miles your oil should be completely black because it absorbs all the comtainments on the Eccentric shaft and bearings.
I have nothing against the Dino oil use, its just that certain people wants to attack Synthetic for no special reason, they dont bash it for cost factor, just bash whatever like BS carbon build up(which came from the GAS they put in) BS oil rubber-o-rings issues(fixed 30 something yrs ago) and some other BS.
If they wanna attack cost factor then yeah .... I guess Synthetic cant win. but everything else ..... (IMO)
Oh but by the way, turning black means the oil is doing its job properly, even 1K miles your oil should be completely black because it absorbs all the comtainments on the Eccentric shaft and bearings.
Yes, the oil is doing its job, but at the same time they lose their effectiveness with age. WHen they change color to a dark level, it's probably time to change it anyway. This is very noticeable when going from dino to synthetic oil.
02-16-2007, 12:06 PM
#87
Originally Posted by tmak26b
I just don't use synthetic on the rotaries primarily because of cost factor. Also if the oil is being burnt off and new oil is being put in, the extra protection from the synthetic oil really doesn't make sense. Fresh dino oil can protect your engine too, might not be as well, but they do their job when they are fresh.
Yes, the oil is doing its job, but at the same time they lose their effectiveness with age. WHen they change color to a dark level, it's probably time to change it anyway. This is very noticeable when going from dino to synthetic oil.
Yes, the oil is doing its job, but at the same time they lose their effectiveness with age. WHen they change color to a dark level, it's probably time to change it anyway. This is very noticeable when going from dino to synthetic oil.
I dont really remember what it looked like when I first change my oil @ 1K miles. It was pretty dark color I think. Last oil change (couple days ago) the color was pretty Dark, I havent change my oil for 3K something miles not to mention I didnt even checked my oil level at all !!!
Oh well. This thread should be closed.
02-16-2007, 12:21 PM
#88
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the fact that the Castrol "expert" had to go to Mazda for their opinion just proves he has not done any testing on a rotary engine and does not have any information or knowledge on the subject except for what mazda told him.
02-16-2007, 03:28 PM
#89
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Originally Posted by nycgps
Oh but by the way, turning black means the oil is doing its job properly, even 1K miles your oil should be completely black because it absorbs all the comtainments on the Eccentric shaft and bearings.
If it was really generated by the sliding surfaces, we'd be changing gear and rear end oil every 3K miles, too.
Ken
02-16-2007, 05:30 PM
#91
Originally Posted by r0tor
the fact that the Castrol "expert" had to go to Mazda for their opinion just proves he has not done any testing on a rotary engine and does not have any information or knowledge on the subject except for what mazda told him.
but for some reason ppl just pop out of nowhere and gave me all these
*he has degree in blah blah blah*
*Study in MIT*
*My friend saids*
*I build lots of engines*
Nothing but full of crap.
Im sure that guy knows something, hell In terms of oil formulation Im pretty sure he knows more than I do. but Im also pretty sure to say that I know more than him in terms of Synthetic oil in Rotary. Nah I dont think I gotta go MIT to know that.
02-16-2007, 10:36 PM
#92
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Im sure that guy knows something, hell In terms of oil formulation Im pretty sure he knows more than I do. but Im also pretty sure to say that I know more than him in terms of Synthetic oil in Rotary.
02-16-2007, 11:32 PM
#94
Originally Posted by 9krpmrx8
Dude, You are freakin dillusional. Your pretty sure? HE IS ****** REFERRED TO AS AN OIL "GURU"!!!!! This thread reminds me of a a group of monkeys ******* a basketball.
Its pretty sad that people who has no rotary experience can talk out loud like that and people actually BUY it. He might be an Expert in oil. but what about Rotary ? ...... questionable
Its just like someone can build/design a super duper fast exotic car, but that does NOT mean he can handle the speed himself. but a Professional driver will.
Last edited by nycgps; 02-16-2007 at 11:45 PM.
02-16-2007, 11:36 PM
#95
Originally Posted by nycgps
Oh hey, I thought u're not going to reply my stuff anymore. If my post hurt your eyes, theres an ignore button up there.
Im sure he knows how oil works, but which one works which one doesnt? Not quite, at least not Rotary.
Its pretty sad that people who has no rotary experience talk out loud. He might be Expert in oil, but how to use it? Expert ? my ***. ok ?
Its just like someone can build/design a super duper fast exotic car, but that does NOT mean he can handle the speed himself. but a Professional driver will.
Im sure he knows how oil works, but which one works which one doesnt? Not quite, at least not Rotary.
Its pretty sad that people who has no rotary experience talk out loud. He might be Expert in oil, but how to use it? Expert ? my ***. ok ?
Its just like someone can build/design a super duper fast exotic car, but that does NOT mean he can handle the speed himself. but a Professional driver will.
beers
02-17-2007, 06:38 PM
#98
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Originally Posted by nycgps
Do I know **** about oils ? I cant say I know all, far from it, but I've been studying Engine oils about 6 months ago and Im pretty sure that I know WAY MORE than you do...
02-17-2007, 06:58 PM
#99
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Originally Posted by Vrimmick
Ok, ok you've been studying oil for six months - now it's high time you studied some grammar.
