When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So I have been running rotella t6 5w40 for a while now and just did a 7500 mile oil change on it and the oil ain't near as black as the Dino oil changes it's had before I'm happy with the oil
A little bummed myself... Had the Schaffers rep (frequesnts the site F350*** or something like that) looking into it and he passed my info along and I never got a call. Got my hands on 3gal of the 7k so I just need 1 more ASAP to complete the oil change before my big trip this weekend.
Thanks for the info!!! Q though... Would it be bad if I used the 3 Gal Schaffers 7000 and a Gal of Shell Rotella? Happen to have it in the garage already and really don't want to pay shipping from Texas...