Originally Posted By: CATERHAM
Originally Posted By: ARCOgraphite
IDK why one would need regularly a 0w rated race oil.
M1 0W-40 is often used as a race oil so what's your point?
Oh and Bob a belated thanks for posting this.
BTW if this 4.0cP HTHS vis oil is thicker than necessary for some applications it can be blended with RL's 0W-30 (HTHS vis 3.2cP) to achieve whatever viscosity you want between the two, all with RL's blessing.
YWVM Caterham. RL 5w30 is on my list... along with more 5w30s, 0w40, 5w40 and 10w40s....