Oil viscosity

[Dean2]

Actually, 3 quarts of 0W20, and 4 of 5W20 would work out to 2.857W20

 

[Dusty]

ordered some PUP oil--instead of 5w20 I got 0w20 seems the 5w20 is out of stock--I have about 3 qts left from previous oil change--any problem mixing the 2 together for this il change--or should I return it and look elsewhere--thanks

Without checking the specifications, 0W motor oils usually means the oil has a lower pour point than the same product family's 5W version, and a slightly higher viscosity index. Since they are both Ultra Premium blend there should be no problem mixing them.

Regards,
Dusty
2019 Ram 1500 Billet Silver Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, factory dual exhaust, 18” wheels. Build date: 3 June 2018. Now at 75071 miles

 

[Elkman]

With a 2017 or newer engine it is important to use the recommended motor oil and weight for your climate. Tolerances are tighter and a heavier weight when cold could easily increase wear on the bearings.

No reason for you to accept the wrong weight oil and tuck your tail between your legs. I would send it back at get the right stuff for your truck's engine.

 

[reborn55]

Thanks for all your help--greatly appreciated--sent the oil back and will try to find the right oil when we get back from a couple of our trips--might be back in stock by then

 

[pacofortacos]

I would have used it and not thought twice about it unless I was towing. For an upcoming winter oil change what you had would have been perfect.

Grease you have to worry about mixing - different chemistries. Not a brand thing for grease as much as there are different greases and a few of them do not play well with the others.

Recommendations for Mixing Greases

In industry, there has been much discussion on the topic of lubricant incompatibility, particularly with greases. When considering switching grease products, whether it’s for better...

www.machinerylubrication.com

I never worry about mixing oils - weights, brands, etc BUT I am also not doing extended oil change intervals. If pushing the oil to 10,000 miles or more, then I would try to keep the same oil together since the additive package does play more of a role.

But as Burla said, you would have been fine with what you had. Just a slightly better cold performance.