What oil should i use (e85 gr86)

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May 3, 2025
Messages
6
I have a gr86 that I've gotten flex fuel tuned and run e85 I've been trying to research what oil to run i change my oil every 3.5k miles I live in the USA (georgia) if that changes things.

Any and all help would be greatly appreciated
 
I think that HPL would be the way to go here, give them a call to see what they have that would be perfect with an E85 tune
 
Nice. Also what kind of use is it seeing? Track, street, auto crossing, etc?
I think the hazard here is more like the use it isn't seeing. How long is he driving it?
Constant short trips? Or longer trips to get the oil in temp?
Potential engine killer is water in oil.
I'm just about to go flex fuel and the advice I got from a local oil manufacturer was to go thicker and do a UOA reasonably quickly like 1000 km to see what was happening then make a decision from here.
In my case it was 15W50 in an engine which usually uses 0w40.
After a UOA can potentially dial it back down but before I have any test results the engine is protected.
OP try a thicker 40 like a 15W40 or 50 like a 5w50 or 15W50 then do a UOA after 1-2,000 km and go from there.
 
Nice. Also what kind of use is it seeing? Track, street, auto crossing, etc?
Daily driving and frequent mountain runs (i don't do anything that crazy but I don't baby the car either) I do plan on auto crossing once I get another vehicle
 
I think the hazard here is more like the use it isn't seeing. How long is he driving it?
Constant short trips? Or longer trips to get the oil in temp?
Potential engine killer is water in oil.
I'm just about to go flex fuel and the advice I got from a local oil manufacturer was to go thicker and do a UOA reasonably quickly like 1000 km to see what was happening then make a decision from here.
In my case it was 15W50 in an engine which usually uses 0w40.
After a UOA can potentially dial it back down but before I have any test results the engine is protected.
OP try a thicker 40 like a 15W40 or 50 like a 5w50 or 15W50 then do a UOA after 1-2,000 km and go from there.
Im hardly ever not driving it I work Monday through Friday and drive 40miles each way car is rarely sitting for more than 10 hours thanks for the advice on the oil analysis I didnt even think of that so I will just do an oil change with what I've been using and then get a sample and send it in
 
Im hardly ever not driving it I work Monday through Friday and drive 40miles each way car is rarely sitting for more than 10 hours thanks for the advice on the oil analysis I didnt even think of that so I will just do an oil change with what I've been using and then get a sample and send it in
Awesome
What oil are you currently using?
 
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