Frankenoil - Thoughts on Mixing Viscosities

[Hall]

There is no 7.5W

Uh-huh ! Halfway between 5 and 10 is 7.5. Actually, never mind....

 

[OilReport99]

Actually, never mind....

Yep

 

[ABN_CBT_ENGR]

Two 5 qt Jugs Mobil 1 Extended Performance 5w30
One 5 qt Jug Mobil 1 Advanced Fuel Economy 0W-30

'14 Ford Mustang 5.0 V-8 w/ Roush Supercharger & Track Pack Oil Cooler - 9 qt

'18 Ford F150 3.5 Ecoboost - 6 qt

Goal - Fill both vehicles without buying more oil.


Mustang gets 4 qt EP + 5 qt AFE (It gets low miles and changes to 15W-50 Track Oil on occasion)

Truck gets 6 qt EP (It gets more miles and is under warranty).

Objections?

None whatsoever and while you did state an expectation your method obviously meets so you did address my inquiry, it really wasn't the kind and depth of the questions I was asking for but thank you for the reply.

 

[Hogwash]

I have a mixup of various oil....brands, weights, conventional, synthetic. Basically whatever small amounts are leftover from different oil changes on my vehicles as well as friends, neighbors and extended family. I pour them into an old Valvoline jug. That then is my lawn mower and pressure washer oil. Been doing this for years.I

Trying to remember what's all in there....

some Mobil 1 5w30, Mobil 1 0w20, Supertech High Mileage 5w30 conventional, SuperTech 0/20, Meijer (Warren) 10/40 conventional, Quaker State 5w30 conventional, Valvoline Maxlife 10/40....and maybe others.

The mower and pressure washer couldn't seem to care any less. Both are several years old and running fine. I do 2 oil changes a year on both. Neither uses any significant amounts between changes