It is a 1986 GMC topkick truck
2006-10-28 07:51:42 · 7 answers · asked by 1500chief 1 in Cars & Transportation ➔ Maintenance & Repairs
Shell Rotella has high zinc content, that's a high pressure lubricant, but it contributes to the ash content. I use Mobil 1 Turbo Diesel Truck 5W-40 in my 7.3 f250 diesel.
2006-10-28 10:10:02 · answer #1 · answered by Chris H 6 · 0⤊ 0⤋
Only buy oil that is specially made for disel engine. Go to any auto shop.
2006-10-28 08:06:22 · answer #2 · answered by sweetpea 1 · 0⤊ 0⤋
SHELL no doubt!!!!
Check your manual for the best oil to be used or call your GMC dealer near you.
2006-10-28 08:01:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I use 15w40 in the 91 Chevy box van that drive for my job.
2006-10-28 11:02:28 · answer #4 · answered by monroelunld00 2 · 0⤊ 0⤋
either rotella or mobil 1 delvac. they are the best as far as ash protection and not sludging.
2006-10-28 08:03:11 · answer #5 · answered by ? 3 · 0⤊ 0⤋
15x40 CJ4
2016-12-01 03:05:13 · answer #6 · answered by victor 1 · 0⤊ 0⤋
rotella, is what I use in my diesel
2006-10-28 12:04:47 · answer #7 · answered by stealth5033 3 · 0⤊ 0⤋