go to the synthetic oil discussion to see some oil analysis results i posted and ash 8 helped get visable.
OD

 

Here's the thing; I used to have that same scepticism regarding what I was taught oh-so-long ago as compared to "modern technology". What surprised me (and gave me the confidence to also start BHR) was when I discovered that not much has actually changed in the past 1/4 century and that we "old guys" can apply what we have learned back then to the RX-8 if we are careful about which concepts apply to the Renesis. Olddragger learned this about the RX-8, in general, 5 years ago when he and I first met and was surprised when I encouraged him to do his own work. Look at him now!

Besides, how has the concept of "friction" changed since the Dawn of Man? It hasn't and the friction between bearings and journals is the same as it is when you are dry-humping your girlfriend.

I have actually found myself disappointed to discover that the biggest changes made in most industries isn't nearly as substantive as it is process-oriented.

BTW, you have already contradicted yourself, Young Man, so I guess age isn't necessarily a bad thing.

 

Apparently, you are not even aware of which "approach" it is I mentioned as it has nothing to do with color.

 

Ok Charles, here where I'm coming from. My 1974 RX-2 blew two engines, perhaps from oil, perhaps from seals, more likely coolant gaskets... or perhaps it's because the rotary is simply destined to meltdown on a regular basis after not so many miles, simply because it has to.

If some newfangled light-weight oil or other had so much to do with failure in the rotary, how come my fancy new RX-8 RENESIS still blew it engine a few 1000 miles ago after (just like 35yrs ago) after about 30K miles? Mazda ability to avoid catastrophic failure modes with the rotary hasn't gotten so much better as far as I can see, and they didn't have any these lightweight or synthetic oils then.

Fortunately Mazda DID have the same generous warranty so life went on and I was sufficiently imprinted to swallow Mazda story hook, line, and sinker... for some crazy reason

 

Now yall can see the oil analysis's i have been trying to get to ya
thanks to Ash 8!!

1st file is havoline 10w/30
2nd is havoline 10w/40
3nd is shell diesel oil
4th- castrol 10w/40

https://www.rx8club.com/attachment.p...6&d=1249245814
https://www.rx8club.com/attachment.p...7&d=1249245814
https://www.rx8club.com/attachment.p...8&d=1249245814
https://www.rx8club.com/attachment.p...9&d=1249245814

notice the viscosity numbers at the bottom of the reports.
olddragger

 

So the numbers are all low for viscosity? It's almost lunch maybe I should read when I'm refreshed.

 

Before conclusions can be drawn we need to know exactly which damage occurred in each of these examples. Calling an engine "blown" is rather vague.

 

Damn it man, I just registered on that site ... grrrr



nice ~~~

hmm ...

 

OD, if we should be aiming for the 10 viscosity range, sure looks like we should be changeing oil every 3000miles and not much further.

 

funny in Hong Kong they do oil change every 3000 Kilometers!!

Thats how many miles ?

but they have tons of stop and go traffic so ...

Hmm, Mazda "recommend" how many miles again ? hmm ...

 

So am I reading it right that the numbers were low for all the oils tested?

 

all low except for the diesel.
the 3nd one listed.
the guy that did these changes his oil every 1000K--no kidding. Its free for him.
OD

 

I lube therefore I am

 

Dr. Wankel would call it das kreiskolbenmotor

 

Most wear occurs at startup.

 

Why are you bothering to repeat what I have already stated?, if you read what I have said I mention Oil pump rotors and shaft, this is what actually PUMPS the oil, do you know the other differences?.

And why have you stated that the Oil pump rotors are "almost are all the same" when the part numbers are IDENTICAL N326-14-140, why add in the TURBO FC oil pump set, a FACTORY RX-8 Turbo does not exist...does it?, so you are NOT comparing, only confusing.

As I said there is no difference, STRANGE?"why did Mazda pull an "old" pump out of the draw", well if you thought about that statement, the last Mazda NA motor made by them was the FC, which was pretty reliable.

STRANGE...No more stranger than using an oil pressure relief valve 0221-14-115 plunger and spring that is 40 years old.

I can pull out over 40 parts that are 40 years old and still used in the latest RX-8....Can you...

Fail!

 

WRONG..Interesting that they used the turboed 13B's stronger oil pump in the NA from 1989.

NO, they used the same oil pump and rotor set as the original 1985 NA FC in 1989 NA FC models.
N326-14-100A and N326-14-140, again the EXACT same "rotor set" as the S1 RX-8.

Fail!

 

Still have no idea what type of oil i need

 

Canola

 

no ---peanut!!
OD

 

It took 14 painfull pages but we finally got there .

 

Sesame seed oil. Charles, relax/ I realize that. I realize you are being serious vendor, but step back - all I'm just saying is that if oil was the only problem the rotary had, and startup wear because of oil in particular, then life would be good and we'd have no engine failures. Unfortunately that not the case.

What Mazda has done in summary over the last 40 yrs, is bring the output levels of the rotary to semi-respectable current NA output levels, but in exchange, the overall reliability has improved some percentage, but nothing to write home about. Failures regularly occur and there are too many variables going on in the mix to be able to address blame conclusively, short of obtaining Mazda numbers (which I would dearly love to have access to!). Oil may be certainly a part of the issue, but if the holy grail 'best for startup' oil existed, Mazda hasn't found it...regardless of their recommendations if current failures are any example.

Beyond and in contest to that, I think we 'down in the ditches' actual car owners have some obligation to reveal our "How we saved the rotary engine from self destruct due to our oil", but the results are variable, and show me proof. Rotary oil recommendations appear still - to be a black art, I mean at least reading this thread you would think so as everyone has a unique take on it seemingly.

 

Do you know which Shell oil it was exactly?

Rotella T ?

Just curious.

 

All wrong damn n00bs.

Olive oil man. Its healthy.

 

Quote:
Originally Posted by cidvicious831
Still have no idea what type of oil i need

Quote:
Originally Posted by rotarygod
Canola

Quote:
Originally Posted by olddragger
no ---peanut!!
OD

your all wrong it's 'oil of olay' makes your car's *** smooth and silky.