Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) PowerDork
10/2/21 10:12 a.m.

I'm getting ready to do an oil change, and when I check my supply I have a little over 1 quart of royal purple 5W 30, 4 quarts of mobile one high mileage 10 W 30, I bought a quart of Rotella 5W 40, and five quarts of Mobile 5W 20.

The car in question takes 5 quarts of 10W-30, and I could just buy another quart of that and be done, but it made me think of this question. When do you just mix what you have when you need to put oil in an engine?

vwcorvette (Forum Supporter)
vwcorvette (Forum Supporter) UberDork
10/2/21 10:26 a.m.

When I'm lazy.

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) MegaDork
10/2/21 10:35 a.m.

I mix when I have enough randoms to do the job in front of me. 

Mr_Asa PowerDork
10/2/21 10:47 a.m.

If I'm doing a scheduled oil change I get the stuff beforehand, sometimes up to a month before.  If I'm road tripping and gotta add half a quart, well then I go to the milk crate in the bed of the truck and get one of the containers of fluids i have there.

Dusterbd13-michael MegaDork
10/2/21 10:58 a.m.

I mix the race car, stepside, and anything that is getting a short change interval. I keep one of the five quart jugs and sharpie "mixed" on it, dumping in whatever is leftover. 

gumby Dork
10/2/21 11:24 a.m.

Paging Bobzilla; Bob to the white courtesy phone, please.

Toyman01 + Sized and
Toyman01 + Sized and MegaDork
10/2/21 11:59 a.m.

I mix them all the time. Brands, weights, dino and synthetic. That usually goes in the older engines. I doubt the 460 in the RV or the 4L in the Jeep care as long as it's oil.

A 401 CJ
A 401 CJ SuperDork
10/2/21 12:32 p.m.

If it's brown and slick, fill it to the top mark on the stick.

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