Originally Posted By: Kamele0N
Originally Posted By: FordCapriDriver
15W-40 means it's gotta be 3.7 or higher, it's somewhere in the 4.1 - 4.2 range if i remember correctly, which is about the normal for a 15W-40 HDEO.
Is this the same for API certified oils?
ACEA has hths >3.7 for the 15w40....
Ocording to VOA subforum here....oils from over the pond all tend to have lower hths numbers...
I'm quite sure? 3.5 for 0W,5W,10W-40 and 3.7 for 15W,20W,25W and SAE 40 correct?