Used to change my oil out every 5000km (approx 3000miles). Now using fully synthetic and no OMP. Just changed my oil yesterday after 6000kms (approx 3700miles).

^ Drunk post! lol









Also as mentioned "heat kills", thermal breakdown of the oil happens faster than a generic piston engine, because the oiling system doubles as a second cooling system (hence the necessity of an oil cooler).



Turbo RX7s have oil thermal breakdown way faster because not only is the oil cooling the engine internals, but ALSO the turbocharger.

[quote name='ColinRX7' date='Sep 5 2005, 12:47 AM']^ Drunk post! lol

Also as mentioned "heat kills", thermal breakdown of the oil happens faster than a generic piston engine, because the oiling system doubles as a second cooling system (hence the necessity of an oil cooler).



Turbo RX7s have oil thermal breakdown way faster because not only is the oil cooling the engine internals, but ALSO the turbocharger.


[/quote]

https://www.nopistons.com/forums/pub...1047683329.gif

[quote name='ColinRX7' date='Sep 5 2005, 01:47 AM']^ Drunk post! lol

Also as mentioned "heat kills", thermal breakdown of the oil happens faster than a generic piston engine, because the oiling system doubles as a second cooling system (hence the necessity of an oil cooler).



Turbo RX7s have oil thermal breakdown way faster because not only is the oil cooling the engine internals, but ALSO the turbocharger.


[/quote]



Cool, thanks alot Colin. I understand alot more now.

you guys are all forgetting that high boost rotaries end up having lots of blow by (fuel in oil)



My old n/A would also get tons of blow by from running to rich. Id put 4 quarts in and if I waited 5,000 miles, id drain 6 out... NO JOKE https://www.nopistons.com/forums/pub...IR#>/blink.png

[quote name='hornbm' date='Sep 7 2005, 01:39 AM']you guys are all forgetting that high boost rotaries end up having lots of blow by (fuel in oil)



My old n/A would also get tons of blow by from running to rich. Id put 4 quarts in and if I waited 5,000 miles, id drain 6 out... NO JOKE https://www.nopistons.com/forums/pub...IR#>/blink.png


[/quote]



lol, ive had plenty of na's that used/leaked oil, and those i never changed the oil just kept adding for 10k+ miles at a time

bah, i say **** it, rotary changes it's own oil, just add more https://www.nopistons.com/forums/pub...IR#>/smile.png

[quote name='phinsup' date='Sep 7 2005, 09:26 AM']bah, i say **** it, rotary changes it's own oil, just add more https://www.nopistons.com/forums/pub...IR#>/smile.png


[/quote]

https://www.nopistons.com/forums/pub...1047683785.gif I honestly almost go by this policy with the 8. I'll let the oil light come on once and just add more oil. Once it happens again, I add more and go get it changed. Pretty much a filter exchange the way I see it.

For me, it's not a case of oil burn, it's a case of oil gain & oil dilution. I run no MOP, 100:1 premix (or so - I err on the side of more premix). In 2000 miles, I gain a bit over a quart of oil. Other people with similar engines get the same thing, so I'm not worried about it.



As posted above, you're not going to kill an engine from too frequent of oil changes. Most people here by this point are on at LEAST their 2nd motor, and care enough to make it last as long as possible.



Plus, a rotary is harder on oil. How many boingers need massive oil coolers?



-=Russ=-

Air-cooled flat-six Porsches. But they also have over a dozen quarts of oil, to spread the damage around in theory, but in practice you're just burning fourteen quarts of oil instead of just five.



Boingers may be too optimistic a term for these engines. In my experience they should be called exploders, or at least immolators.