Mix QSUD with QSUD HM... Smart or dumb?

Joined
Dec 19, 2018
Messages
1,535
Location
Vancouver
My wife just turned 101k miles on her Jeep. I have only used synthetic 5w20's its whole life changing around 7.5k. I have one jug of QSUD 5w20 remaining - I notice the store has QSUD on sale and I thought it might be a good idea to start using a high mileage. I figure I could go 50/50 with my current jug and HM for the next two changes and then use HM after that. The Jeep does not have any leaks or burning oil issues or anything like that but I would rather be proactive about it.

Good idea or stupid?
 
Joined
Aug 7, 2020
Messages
750
Good idea, IMO. Coincidentally, I may be doing something similar on my next change, adding a quart or so of HM to the mix. I'd use the same formulation, however, just as you're doing with QSUD I'd do with M1 EP. My Camry has 80K on the clock, no leaks, no oil use to be concerned about ... a little HM couldn't hurt. Looking forward to other responses.
 

Jimmy_Russells

Thread starter
Joined
Dec 19, 2018
Messages
1,535
Location
Vancouver
The specs on the 0w20 are pretty crazy, -66 pour point? It's also a little thicker than the 5w20 at 100.

1616708690616.png


1616708743309.png
 
Joined
Jan 25, 2018
Messages
1,090
Location
South Carolina
I've used various mixes of brands, weights, and HM/non-HM over the years with no issues.

In fact, my next OC in the Honda will be a blend of Valvoline, Pennzoil Plat HM, Pennzoil Start/Stop, STP, QSUD, and probably one or two others. This is my "extra" jug that catches the half qt remaining in the jug after dumping 4.5 qts into the sump. After 9 OCs I finally have enough to use it!
 

Kokopelli34179

Site Donor 2021
Joined
Sep 16, 2019
Messages
71
Location
New Mexico
I see no issues with that, as others have said. There really isn't any better way of using up "leftovers" short of disposing of them.
 
Joined
Jan 24, 2008
Messages
12,626
Location
OH
Last oil change for '12 Camry was 3.5 quarts Idemitsu 0w20 and 1 quart Mobil 1 EP 0w20 High Mileage. Runs great and quieter than before.
 
Top