Rotella syn. 5w-40

[EastTexFrank]

It didn't really occur to me that mixing the two would be a problem ....dduuuuhhhh!!!! Don't some manufacturers make a semi-synthetic oil that is a mixture. Also, I know that I've read on some of the synthetic packaging that it can be mixed with petroleum based oils without creating a problem.
Thanks for the input guys and for pointing out my potential mistake. I better do some research before I get too many hours on this oil change.

 

[EastTexFrank]

I did what you said, I pulled up the Rotella website and emailed their technical department. I told them exactly what I had done and asked for their recommendation as to whether to drain the tractor and start again. I got an answer in a matter of hours. I was impressed. Those guys at Shell are really responsive.
Suffice to say that I don't think they were too impressed with what I had done but in short here is their reply.

<font color="blue"> </font><font color="blue" class="small">( While I do not recommend mixing two separate oils, there are no compatibility issues that would warrant draining the oil before your next scheduled change.
)</font> </font>

So I guess I'm off the hook but I don't think I'll be doing that again. No more mixing for me. Thanks to you guys for pointing out the potential problem. Lets get back to the either/or discussion before I start felling stupid again.
I think I'm leaning towards using the Rotella Synthetic in the tractor from now on, after all, it's just a little over 3 quarts and continueing to use Rotella T in the truck.

 

[Kiohio]

Glad to hear that. Better safe than sorry. /forums/images/graemlins/wink.gif

KO