I've been searching and reading here for the last 2 hours, and I can't seem to figure out the answer to this question. I'm changing my oil in my diffs in my 2000 F250 superduty powerstroke; and the only synthetic lubes I can find locally are Redline, Mobil 1, and Royal Purple.
I've read that the Mobil 1 isn't so hot...
Redline and RP both look to be good oils. But the viscosity of the RP seems to be quite a bit thicker; and their marketing is a bit, uuumm, full of made up terms.
Conversely, I've read a few posts here about the Redline breaking down very quickly.
So; what would you recommend for this application. I tow around 6k# in the summer, anywhere from 70-100* ambient, and wintertime is usually anywhre from 20-low 30 degrees.
Thanks for any advice you can give!
I've read that the Mobil 1 isn't so hot...
Redline and RP both look to be good oils. But the viscosity of the RP seems to be quite a bit thicker; and their marketing is a bit, uuumm, full of made up terms.
Conversely, I've read a few posts here about the Redline breaking down very quickly.
So; what would you recommend for this application. I tow around 6k# in the summer, anywhere from 70-100* ambient, and wintertime is usually anywhre from 20-low 30 degrees.
Thanks for any advice you can give!