1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

OIL which brands burn good and which don't?

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Old 10-12-08, 07:40 AM
  #126  
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Originally Posted by nimrodTT
I, for one, am tired of people saying not to use synthetic in a rotary. You want the cleanest burn and the best protection inside the combustion chambers against friction on your rotary? Then a SYNTHETIC two-stroke premix oil can't be beat. You want the best protection for your engine internals with the lowest friction and longest wear? Then a SYNTHETIC motor oil is for you.

If just one person stops spreading the myth, then it's worth my effort. Don't even get me started on ATF and MMO...people should start thinking for themselves instead of blindly jumping to someone else's conclusion.
You should read the owners manual so you can see that is not a myth, it clearly says that mazda recommends not to use synthetic oil in rotaries.
Old 10-24-08, 08:47 PM
  #127  
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Originally Posted by Northern 7
Racing Beat has been using Synthetic for years - what I'd like to know is are they also using a premix and can you rely on the OMP alone when using Synth. oils.

The only unanswered question so far is if Synthetics do not burn (or burn less), what happens to the oil the OMP is providing? Is it being burnt off or is it collecting in the form of a sludge in your engine. If racing beat is correct, the oil must be burning off - OR - they are not running the OMP and using a premix (synthetic??) as noted above. Anyone have any insight into this??
i am a certified mazda tech the reason you don't want to use synthetics is because synthetics are made to not burn, where reg oil will burn and leave out the exhaust. now all the synthetic oil that does not burn stays in the housings and crystalizes and adds friction wich robs power. i premix mine the stock omp has been removed. sorry i only started reading this post and did not read till the end so if this has already been mentioned my bad. premix is the best way to go
Old 07-10-09, 02:07 AM
  #128  
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Wink syn oils in my 12a best perf w/ r purple premix

but one time only i usually use pennziol syn 2cycle out board and always premix i somestimes use merc marine when penn s, not aval.
Old 07-10-09, 02:17 AM
  #129  
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i used royal purple... dam its expensive, not sure if i noticed much of an increase in power tho... this seams to be an old thread... can't believe people still debate that...

I'll follow what RB has to say, they know what they are talking about, perhaps more than mazda... or at least most of the mazda techs
Old 07-10-09, 06:08 AM
  #130  
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Use synthetic in the engine oil, use the separate OMP tank mod w/2 cycle (good brand and enough for a few tanks) good to go.

I like to run seafoam once n awhile down the carb and let some premix soak in the engine randomly, it's like taking the engine out to dinner lolol.
Old 08-01-09, 05:54 PM
  #131  
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Idemitsu Racing Rotary Engine Oil 20W-50
(Full Synthetic)

The same oil was used in winning 1991 24 Hour LeMans race. Nothing proves its quality better!
Old 08-08-09, 11:09 AM
  #132  
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I`m running AMSOIL interceptor for premix and am convinced that my next oil change will be with royal purple 10w30. And my FC I only use it on weekends, highway driving is way more fun than stop and go traffic.
Old 10-09-09, 12:33 AM
  #133  
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Another oil discussion!

How do high zinc oils perform in our rotary's. Yay or nay?
Old 10-09-09, 02:15 PM
  #134  
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Originally Posted by Crazyk82
How do high zinc oils perform in our rotary's. Yay or nay?
The zinc is a high pressure lubricant additive that is needed for protection of the cam and lifters in a flat tappet engine.
Roller lifters do not need it.
Rotary engines do not need it since there are no cams or lifters.
Old 10-09-09, 02:17 PM
  #135  
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then how do the valves open?
Old 10-09-09, 02:21 PM
  #136  
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they don't. that's why piston engines kick our ***.

when we open our valves though ... look out!

on a serious note, Wecycle, i never knew that. thanks for enlightening me today.
Old 10-09-09, 02:34 PM
  #137  
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What about how it burns in the motor does the zinc have a negative effect? Other than clogging the cats?
Old 10-09-09, 03:10 PM
  #138  
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Originally Posted by thunkrd
then how do the valves open?
The magical gerbils living in our engines open them for us.
Old 10-09-09, 03:17 PM
  #139  
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Originally Posted by PercentSevenC
The magical gerbils living in our engines open them for us.
I knew it!
Old 10-09-09, 03:45 PM
  #140  
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i'm hoping the zinc doesn't burn, it could make Zinc oxide... white smoke??

then again i might have just said something that doesn't make sense?
Old 10-09-09, 04:01 PM
  #141  
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I believe that's true because thats how it clogs up cats.
Old 10-09-09, 04:41 PM
  #142  
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Originally Posted by thunkrd
i'm hoping the zinc doesn't burn, it could make Zinc oxide... white smoke??
But that would help offset the extra UV we all get from the ozone hole... I demand an eco-credit!
Old 10-09-09, 07:09 PM
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Well from what ive found its probably not good to run a zinc oil in a rotary. Because it has no benefits and it bonds to the platinum in the catalytic converters.
Old 10-09-09, 07:41 PM
  #144  
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No platycatties in my SA... and maybe it'd regalvanize the inside of my muffler?
Old 10-09-09, 08:45 PM
  #145  
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Originally Posted by DivinDriver
No platycatties in my SA... and maybe it'd regalvanize the inside of my muffler?
I think you just introduced a new product! You should call it RESTORAMUFF
Old 10-09-09, 11:24 PM
  #146  
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Ever drain oil out of one rotary engine and dump it into another? That's what I do. It's cheaper than buying new and saves mother Earth. I call it the great rotary oil rotation.
Old 10-10-09, 11:19 PM
  #147  
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Amsoil 10w-30
Old 10-11-09, 08:25 AM
  #148  
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Amsoil 5W-40W European Car Formula.

On a side note Amsoil has published a technical service bulletin TSB: MO-2007-09-06 on the use of synthetic oil in the Renesis engine. What it says applies to all rotaries I would think.

Here is the link

[URL="http://www.oildepot.ca/interesting-articles/tsb-synthetic-rotary-engines.html"]
Old 10-28-09, 12:06 PM
  #149  
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WA best oil?

i'm just trying to find out what is the best oil to use on my 89 n/a with 70k miles on it like what weight and brand or just anything that could help...thanks rotor heads
Old 10-29-09, 11:06 AM
  #150  
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I used royal purple in my repu's motor, with an OMP, and the internals are INCREDIBLY CLEAN. Very little carbon on the rotors.

Of course I use SeaFoam in the gas tank a lot.



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