I usually go through ~20-30 gal of oil a month (work) I use to use Rotella until it disappeared. I ordered 100 gal at like 14 something a gal a several months ago. Now that it's hard to find and $10 a gal more, I started buying CAT oil. It's made by Mobil and was only $16 a gal.
I was in NAPA the other day and their brand 15-40 is 17.39 per gal
I was in NAPA the other day and their brand 15-40 is 17.39 per gal

