Is Castrol GTX the thickest of the 5w-20 Dinos?

Messages
1,784
Location
Bonnyville, AB
Most brands fall in around 8.5, Havoline DS is the thinnest at 8.0 cSt, then Pennzoil at 8.2, and at the other end of the spectrum GTX is 9.1 and quite near a 30 weight. There's a bigger spread between DS 5W-20 and GTX 5W-20 than there is between DS 5W-30 and GTX 5W-20.
 
Top