TractorByNet.com - View Single Post - 10-30W versus 10-40W

Doc_Bob · 05-12-2008, 01:57 PM

"Singlegrade oils will become obsolete for performance engines in the future. We dropped SAE 30 and SAE 40 because SAE 10W40 does everything 30 or 40 can doé*nd some things the straight grades can't doæ§˜ike increasing horsepower. If an off-roader doesn't like 10W40, then use 20W50. It can do everything a 10W40 can do except pass the sub-zero viscosity test at -20 degrees C."

Oil Viscosity

I still don't k now the answer to my question. Just thought i would post this anyway.
Bob

05-12-2008, 01:57 PM	#2 (permalink)
Doc_Bob Elite Member Join Date: Mar 2006 Location: Wisconsin Posts: 2,756	Re: 10-30W versus 10-40W "Singlegrade oils will become obsolete for performance engines in the future. We dropped SAE 30 and SAE 40 because SAE 10W40 does everything 30 or 40 can doé*nd some things the straight grades can't doæ§˜ike increasing horsepower. If an off-roader doesn't like 10W40, then use 20W50. It can do everything a 10W40 can do except pass the sub-zero viscosity test at -20 degrees C." Oil Viscosity I still don't k now the answer to my question. Just thought i would post this anyway. Bob