Everyone talks about the tight clearances of these engines? I have looked at the clerances they really aren't that different than the other modualr engines that were spec'd for 5w30 then back spec'd to 5w-20. I really feel that this is for CAFE reasons only. There isn't anything wrong with a 5w-20, but this car is making 500+ HP. So 0w-40 would be okay for use in this engine? Thanks
Um, Castrol Edge 10W-60 is a synthetic with a decent pour point of -42C. I doubt anyone would even notice a difference between it and say 5W-40 on a hot day...
Originally Posted By: Edge Sport 10W-60
Castrol Edge Sport 10W-60 is an SAE 10W-60, API SM/CF, ACEA A3/B3/B4 full synthetic engine oil suitable for the majority of passenger vehicles on Australian roads today. The wide viscosity rating provides excellent cold start-up wear protection with extreme high temperature stability, offering superior engine protection under all operating conditions.Flow characteristics in low ambient temperatures ensure engine protection from the first moments of ignition, minimizing wear and damage....Flow characteristics in low ambient temperatures ensure engine protection from the first moments of ignition, minimizing wear and damage.
After looking over the Aussie Castrol site, it really is a pity we can't get some of those Edges here, specifically the 0W-40...