View Poll Results: WHAT TYPE OF OIL DO YOU USE?
5W-20
47
41.96%
5W-30
41
36.61%
OTHER (specify what oil you use)
27
24.11%
Multiple Choice Poll. Voters: 112. You may not vote on this poll
Engine oil! (what oil do you add?)
07-27-2009, 03:13 PM
#53
After talking to some people whom I trust and who work on rotaries from street to racing, I use 10 - 40 dino. I live in a hot place......
Check this out if you have already done so.
https://www.rx8club.com/series-i-tech-garage-22/lets-look-expo1s-over-100k-renesis-motor-138402/
It covers a few valid points.
Check this out if you have already done so.
https://www.rx8club.com/series-i-tech-garage-22/lets-look-expo1s-over-100k-renesis-motor-138402/
It covers a few valid points.
SPIN is right on the money. The typical engine failure mode is due to carbon deposit buildup in and around the Apex seals. This is a given well known in quality rotary engine build circles. Folks, this is a given. All you street bandit forum surfers can take this as gospel. This carbon buildup prevents the apex seals from moving in and out and results in loss of compression/loss of power. It does some other carbon buildup things but the vast majority of the time its the Apex seals. I have purchased and had tore down many a stock motor and seen it myself. The lower the mileage the less the issue. The type of oil you use has little if any influence on this. Motor oil is not very good in a combustion event. This is why we and other people racing this crazy car remove the guts of the oil metering pump thingee and then add 2 stroke pre-mix to the fuel (for engine seal lubrication). This is the same type of two stroke oil used in motorcycles, snowmobiles, Sea-Doos etc. The typical mix ratio is 1 oz. / gallon that if you use 1.2 or .9 oz. per gallon your still fine. (READ AS DON'T MAKE A STUPID POST ABOUT "My friend's neighbors uncle's dog told my sister that you have to use .875 oz. per gallon or your ECU makes the car go into limp mode and turns off the DSC at 112 mph and causes the stereo to switch to country music and...."). It's an engine guys. Just because its a rotary with a bunch of crazy valves doesn't make it the most unique thing in the world.
There is no need to reply to this post to debate this issue. Those who do will either add something of value in terms of small comments further detailing this issue. Those that will debate this are not in the know and most likely either don't own or set of metric wrenches or the plastic wrap is still on them because they've never been used.
Happy rotoring
There is no need to reply to this post to debate this issue. Those who do will either add something of value in terms of small comments further detailing this issue. Those that will debate this are not in the know and most likely either don't own or set of metric wrenches or the plastic wrap is still on them because they've never been used.
Happy rotoring
right now.
07-31-2009, 03:03 AM
#54
AJ- THE True Rotarian.
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I have a friend who is alot into rotaries as most of us are he owns an rx8. He is one of those people such as myself who does/wants to do all sorts of things to his 8. He has his own body shop... that he runs with his other friend. Btw, he put around 20 grand into his 8. He has a turbo, suspension kit, all sorts of things I can't mention right now. And the funny thing is that he never races or revs his 8 to the max (he is like a lowrider or somewhat like that he always drives/cruises at low speeds). He takes care of it like its his baby (which most of us do). He has an 04, 6 speed. HE adds only 5W-20 and he has About 70k miles with "original engine" (hasn't done any recalls) So what do you guys think about the fact that we need to rev 1-3 times every day to keep our engines decarbonize?
I was asking him about how his engine lasted so long as most people's didn't. He says the facts that kept him from not f'kin up his engine is he never revs his 8 much, drives it smoothly and also he doesn't add any other oil other then the factory recommended oil 5W-20.
I was asking him about how his engine lasted so long as most people's didn't. He says the facts that kept him from not f'kin up his engine is he never revs his 8 much, drives it smoothly and also he doesn't add any other oil other then the factory recommended oil 5W-20.
Last edited by atruerx8racer; 07-31-2009 at 03:08 AM.
07-31-2009, 08:36 AM
#55
RX Lectriod from Planet 8
Join Date: May 2009
Location: Atlanta, Ga.
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I have a friend who is alot into rotaries as most of us are he owns an rx8. He is one of those people such as myself who does/wants to do all sorts of things to his 8. He has his own body shop... that he runs with his other friend. Btw, he put around 20 grand into his 8. He has a turbo, suspension kit, all sorts of things I can't mention right now. And the funny thing is that he never races or revs his 8 to the max (he is like a lowrider or somewhat like that he always drives/cruises at low speeds). He takes care of it like its his baby (which most of us do). He has an 04, 6 speed. HE adds only 5W-20 and he has About 70k miles with "original engine" (hasn't done any recalls) So what do you guys think about the fact that we need to rev 1-3 times every day to keep our engines decarbonize?
I was asking him about how his engine lasted so long as most people's didn't. He says the facts that kept him from not f'kin up his engine is he never revs his 8 much, drives it smoothly and also he doesn't add any other oil other then the factory recommended oil 5W-20.
I was asking him about how his engine lasted so long as most people's didn't. He says the facts that kept him from not f'kin up his engine is he never revs his 8 much, drives it smoothly and also he doesn't add any other oil other then the factory recommended oil 5W-20.
That's good.
I know of at least two other members here who have over 90k on 5w-20 and never premixed.
But the sad part is we talk about 100k like that's something great but 100k is average at best because most cars should be able to reach well within 100k miles if not 200k.
I mean Mazda re-flashed the 04 to 08's to put more oil into the chambers and they added yet another oil injector for a total of 3 in '09.
Every other RX-8 sold outside of North America uses heavier weights than 5-20....
That's got to tell you something right there.
But do whatever works for you.
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