Is anyone running this weight of oil in their cars? Any comments of how it will run in a GSR or ITR engine?

 

Is that the rally oil?

 

took the words out of my mouth

 

What part of the country do you live in? What does your owner's manual say to use?

 

Kind of weird, but has anyone tried 10w 40 Mobil 1 motorcycle oil. It is 4 stroke oil, just curious if anyone has used it.

 

I use 20w-50. No problems so far but the car still burns it up pretty quickly.

Time for another rebuild.

 

Thats what is used in boxer WRX engines for performance figures.

In europe and japan stock oil is 5w40 for the B18C

Now if you want something abit better run 10w40 because the #'s themselves represent like this: First # is the oil will get no thinner then 10 at cold start, once the engine reaches operating temps measured at 100 degrees C. it will not get any thinner then the last # and the oil will operate at this last figure until the oil loses it breaches the viscosity of the last # meaning it's starting to be burned up as it's no longer able to keep the parts as lubed as before.

15w40-50 is what is normally used when they venture out to sweden or extreme cold temps.

I would suggest 5w40 or 5w50. So your still getting good protection in cold starting conditions and better protection once operating temps have been reached.

 

i think 5w30 winter , 10w40 summer, is best on the street,

and track will be 5w50