I have a 2002 2500 hd 6liter gas, with auto, and want to go the synthetic oil route.

I like the Pennzoil platinum and was wondering if the 5w-30 full synthetic is the way to go for
RV towing 10,000 pounds in the hills of Ohio and Kentucky, no mountains here.

is that the correct grade?

Is the change interval longer?

thanks
Kevin
Cincinnati Ohio

 

Look in your owners manual

 

on my truck ive run the regular oil i get from tom gill chevrolet oil changes 13.99 a pop (GOOD DEAL) cause thats cost for me........and then i let them tell me what i need to fix(yes im a bum) and havent had a problem pulling..my dad did same thing and his truck ran awesome 3200 miles with a trailer straight

 

I have a 95 chevy with 193,000mls none-rebuilt engine. Very small. I put the recommended oil for everyday use. I pull a rear tongue trailer with a skid steer every day. Possibly heavier than the 5th wheel. I have had no problem with wear and tear on my motor. One more tip, I also change my oil every 2,800 miles on the money. It stays clean. zach