Part of my deal on this truck was free oil changes for life. I'm quite sure the dealer will not spring for synthetic. So, is synthetic that much better that I should pay or take my free changes. They will change every 3750 miles.

 

The scheduled maintenance calls for oil & filter changes every 15,000 miles or 7,500 miles depending on the severity. If they'll do it every 3,750 miles, jump all over it, as long as the oil meets Cummins requirements. Skip the synthetics until 20,000 miles or so...Cummins says it can take this long or longer for the engine to break in.
Greg

 

Sounds great except that you have to be inconvenienced by taking the truck to the dealer and dropping it off. It doesn't take long to reach 3750 miles either.

 

Ditto what Dodgezilla said. You're truck will be sitting in the shop waiting on oil changes almost as long as its sitting in your driveway (or you spending your time drinking lousy coffee in the customer waiting room).

I'm sure they would they increase the interval to what DC recommends - since you paid for it up front, its less parts, material and labor for them. Everybody wins.

 

I don't have to do it every 3750 thats just as often as they are willing to do it. Main question was is the synthetic beneficial enough for me to spend my money on oil changes rather than theirs. The time is not a concern they will pick it up while I'm at work.

 

I personally like syn oil; BUT, with a deal like you got - I'd be totally happy with dino oil. Go for it.

 

I got the same deal with mine.It give's you 14 free oil change coupons.It is worth using them up then going to synthetic.Most dealers have a quick lube and it doesn't take more than an hour most times.Just my $.02

 

I ran synthetic in my 92 but it sure is a lot of $$$ for 3 gallons of it. I'm still running Rosmella right now but I may go to synthetic in the future. If you are not inconvenienced by having to go to the dealership then I too would say get whatever you can for free.

 

Take the free oil changes!! I havent let the dealer touch mine , but if it was free I would be all over it.

 

For as long as I own vehicle not just 14. So at some point I'll have to make the decision to keep getting free or pay and go to synthetic. Will the interval that they are willing to change offset the benefits of synthetic?

 

Changing the oil that often, I would stay with the free oil!

 

Take the oil changes, I did! First 2k done! That is one deal you can't pass up. Mine are as long as I own my truck and it is a great deal. The oil they use is what comes in them along with the oil filter.

 

Synthetic or Dinosaur that is the question.
Whether 'tis nobler in the mind to suffer the slings and arrows of outrageous fortune... uh, sorry wrong forum.
While the jury is still out on this one, the wife's car has had Mobil1 10w30 since the first change and it is 5 years old and 57k. Her dad's car is just like it except 27k and 3 years old and always had dino. Both sit outside parked next to each other. In the winter when the temp is 40 or below the Mobil1 engine turns over much quicker and revs quicker when the engine is cold. The dipsticks and oil fill caps appear to be identical, no tar just a light varnish on them both. When I change the oil, the Mobil1 engine doesn't have to be warmed, it drains out easily cold. Not so the dino oil engine. I gotta think the oil that doesn't get thick when it gets some age on it is doing a better job, but like I said, the jury's still out. This winter I'm gonna try synthetic in the diesel tractor to see if the same holds true cause it's a bear to start when it's snowing.
Nat

 

3rd Ram, with those drain intervals, you won't suffer a thing from using dino oil.

If you used it in consistent single digit temps (or low teens) in the winter, I'd run syn in the winter and let the dealer do the other changes for the rest of the year.

 

Check to make sure, mine for was for life also and they say that is the life?