Found a decent sale on the stuff and am wondering if it will be OK for my '02 7.3. It's full synthetic 10W-30 (my winter weight choice) with API service of SM. The manual specs API CG-4/SH. I am thinking SM is better than SH if I remember correctly.

Anybody using the stuff? I was going to go Royal Purple or Rotella syns, but couldn't find them locally and came across this Penn.

Thanks for any input!

 

Here's some good info on recommended oils for our 7.3's: LINK

Nut

 

Oil ratings: "S" means spark ignition. "C" means compression ignition. If that oil lacks the "C" rating, it's not meant for your $10,000.00 diesel engine.

 

I'm kinda in the same situation except i already bought the oil. Heres the thing. I bought 5 liters off the and a case. The api rating on the bottles off the shelf is SL/CF. I opened the case and the bottles are the same part# But the rating on the newer bottles is SM. BUT it also says it exceeds SM,SJ,SH,SG/CF and ILSAC GF-4 and JASO WEAR TEST. I figured with the CF rating it would be fine. Its full synthetic. Thought i'd try it for a winter and it was on half price. Should i run an anti-foaming agent with it to be safe? Thanks Lancer