guys I'v set my bench mark for the engine oil rating to be either xW50 or xW60 due to my hot climate here throughout the year..... I had initially thought (if those of you have read my other thread in F-Life) that I'll settle for Mobil 1 5W50.....however when i called in the Redline guy to place an order for the tranny fluid, he is now trying to get me get his Redline 5W50, 15W50 or 10W60...... If so which one do I go for? cheers.....
I use the 10W60 Redline, the ester formulation for the high-revving E46 M3 and E60 M5 motors. I had almost a full case left over when I sold my M3, so it found a new home in the F355. No problems at all with it, and probably the same can be said for Mobil 1, etc.
however does your engine feel slightly "heavier"(revs a very little slower) on the 10W60 as compared to a lower viscosity oil?
To answer this question; I need to know the oil temperature on the gauge after a spirited run in your country under typical temperature you drive the car in. If you don't see temperatures over 265dF, then stick with xW-40 oil with HTHS over 4.0 If you don't see temperatures over 305dF, then use xW-50 oil with HTHS over 4.8 If you see temperatures over 305dF then use an xxW-60 oil with HTHS over 5.6 For the hot weather climate in Malaysia the first two numbers are most irrelevent (xxW-). If you are tracking the car, go for the smallest spread between the first two numbers (xxW-) and the second two numbers (-yy). If you just drive with verve on public roads then it really doesn't mater the spread between xxW- and -yy in Malaysia.
No, not at all. I live in the coastal region of Southern California and the car lives a pampered life. It rarely goes out in weather below 40 degrees or above 85 degrees F. The engine is perfectly happy with this oil. Results may vary for other users in other climates, but it works for me.
Mitch speaks the truth. ^^^^^^^ HTHS is a high temp shear rating figure which is basically an oil torture test performed at I believe 150C. Anyway, this figure IMO is the most paramount figure for an oils ability to do its job under high stress conditions. Red Line, Brad Penn, Joe Gibbs, all have excellent HTHS figures
