quick question! combining 75w-90 w/ 80w-90. Possible?

dmacalot · 01-16-2007, 12:57 PM

like the title says, i have three quarts of 75w-90 and two quarts of 80w-90 valvoline non-syn. can i combine these (3 quarts of the 75w and 1.3 quarts of the 80w) for a tranny fluid change? im changing it today so any help is appreciated!

La Mer · 01-16-2007, 01:16 PM

my thoughts are that you would change the weight of the oil to ~77w. i don't see it being bad.

bump.

Flycaster · 01-16-2007, 04:38 PM

I've run both, depending on what I've been able to find at the time. Frankly, I can't tell any difference so mixing 'em shouldn't matter a bit. I say do it.

01-16-2007, 12:57 PM	#1
dmacalot S204 Racer Car: 04 Fav Mod: teh hot wimmenz Location: so. cal Posts: 4,401 Join Date: Dec 2003 Trader Rating: (0)	quick question! combining 75w-90 w/ 80w-90. Possible? like the title says, i have three quarts of 75w-90 and two quarts of 80w-90 valvoline non-syn. can i combine these (3 quarts of the 75w and 1.3 quarts of the 80w) for a tranny fluid change? im changing it today so any help is appreciated! This ad is not endorsed by this member. Please register or login to hide this ad.

01-16-2007, 04:38 PM	#3
Flycaster S204 Racer Posts: 3,008 Join Date: Apr 2004 Trader Rating: (0)	I've run both, depending on what I've been able to find at the time. Frankly, I can't tell any difference so mixing 'em shouldn't matter a bit. I say do it. This ad is not endorsed by this member. Please register or login to hide this ad.

01-16-2007, 01:16 PM	#2
La Mer NIИja Location: US - Southern California Posts: 38,223 Join Date: Jan 2006 Trader Rating: (5)	my thoughts are that you would change the weight of the oil to ~77w. i don't see it being bad. bump.