Ok to mix Rotella T 15-40 and Delvac 15-40?

[Moose016]

I was doing an oil change with Rotella T 15-40 and I ran out just a bit short, I have a bunch of mobil delvac 15-40 laying around, can I use that to top it off, or do I need to go get more rotella T? I'd rather not buy anymore,
I've got enough oil laying around to last me a solid 5 years.

Thanks very much for the help.

 

[xxch4osxx]

Perfectly fine to top it off with.

 

[mongo161]

IMO......they should be compatible to be mixed. I've mixed a few oils in the past.....lol......and nothing has gone wrong.

Don't sweat the small stuff......you should be good to go.

 

[oggb]

Ran a nearly 50/50 mix of Rotella and Delvac in my Subaru for about 4000 miles. It's still alive and kicking.

 

[chad8]

can u mix ice mountain and absopure water?
Or would that be gin and tonic for you elders on here.
All oils will mix. As consumers reports said a long time ago, oil is oil.

 

[dparm]

Should be fine.

 

[Moose016]

Thanks very much for confirming, I thought so since they are the same viscosity, but just wanted to be sure.

 

[Gene K]

The formulation of the 2 actually appear closer than Rotella T3 and Triple Protection and I mix those routinely.