blueoneton
Full Access Member
Just wanted to know what you 7.3 guys think with this question. I have been using the Rotella 15w40 in my 2002 F350 for a while with no issues/complaints. I also hear the Delo 15w40 is too an execellent oil. Costco has a good coupon deal on the Delo 15w40. Not saying I'm going to run out and buy the Delo, but wanted some opinions on both and how your 7.3's do with the Delo.
Thanks
bot
Thanks
bot