Question for the well informed

[Skyco]

That website you put up specifically had the Mobil 1 Turbo Diesel Truck Oil 5W40 that I used listed as approve for use. I'm I missing something here? I can notice the engine running alot quiter this the syn. And temps are already dipping into the high 30's here. The truck sure starts up better with syn.

Thanks
Matt T.

You are fine.
Don't ya'll have Pep Boys up there? They carry the Royal Purple line now...not an endorsement since I've never used it. Pricey stuff though...

 

[GreatWhitehunter]

There are Pep boys in the area but not close enough. We run the royal purple in alot of the pumps at work and it worth the price. It always tests better that the mobil 797 we were using before. The only think I notice is the royal purple didn't seem to have a full syn on their web site. I could only find a blend.

Matt T.

 

[saparks10]

I'm going to try to find that oil you are using for my truck now. I really like mobil 1 oil but I didn't even know they made one that was approved for it. My engine routinely goes about 10,000 to 12,000 miles between oil changes and It would sure make me feel better having the oil I trust the most in it. I change oil every 3 months regardless of mileage and I'm due again at the end of this month. It's already over 12,000 miles now.
The mileage by itself doesn't worry me, I've run trucks on a 6 month and even a 1 year schedule and gone nearly 100,000 miles on an oil change before. Back then we did samples every month and just changed the filters every 3 months. As long as it doesn't get moisture in it and the additive levels are good then it's fine on it.
The only problem is that all those extended oil changes were done with mobil 1 oil and untill now it wasn't available for a power stroke. The fleetguard additive is good but I can't get that around here either. The IH dealer here is about worthless.

Hydrotex makes a hyfilm max that meets all current specs including the new cat acert engines. It will run in any engine out there right now, smoother and cooler. It is a group 3 severly hydrocracked and hydrotreated synthetic oil.