First oil change

[Sesco4]

I've had the truck for about two months now and not knowing when the previous owner last had the oil changed I want to change it. I'm planning on using Rotella oil but don't know which one to use. My local Wal-mart carries the T-5, T-5 synthetic blend and the full synthetic T-6. So which one do I need and why.

Thanks

[RRF985]

I am running the T6 since it is a full synthetic and since it is a 5w-40. Personally, i like having a full synthetic in my motor. Others run the T5 10w-30 synthetic blend with success so it really just depends on what you want.

[jd4010]

Boy have you opened a can of worms! There are countless threads on the oil weights to use ad nauseum!

If you search these threads, you'll find anywhere from 15w-40 to 5-40 and all points in between. Some of the answer depends upon your climate and how you use your truck. In a colder climate, the 5-40 oil (like Rotella T6) will help you out with easier starting, smoother running when cold and even fuel mileage. Some prefer the Rotella T5 which is 10-30 in weight.

As for me, I am currently using Amsoil 15-40 but will be switching to Rotella T6 the next go round.

[Fox'sFord]

I run the T6 5w-40 and have had great results. Lots of guys on here running T5 10w-30 and swear by it. There are plenty of threads here with lots of opinions, and lots of guys sharing their analysis results. Just look around and remeber these engines love good clean synthetic oil.

[Galaxie]

I run the T-6 5/40 full syn. Its great. I work long hours and it can get down to 0*. Never had an issues.

[Crows Synthetics]

Originally Posted by Sesco4

I've had the truck for about two months now and not knowing when the previous owner last had the oil changed I want to change it. I'm planning on using Rotella oil but don't know which one to use. My local Wal-mart carries the T-5, T-5 synthetic blend and the full synthetic T-6. So which one do I need and why.

Thanks

Since I have A 7.3 my comments might be a little off. I do have Friends that have the 6.0 and we all use Amsoil with out a doubt the way to go. A lot oppose the cost and refuse to extend there oil drain but bottom line Amsoil protects your engine the best.
That being said I would use the Synthetics over any choices.

Bill

[War Eagle B]

I use T6. Really smooths out how the engine runs at startup.

[obsidian]

T5 is gold. Look in my sig for a ton of info on the T5.

T6 is gold. There are threads on it also.

These engines love the thinner oil, so why not give it to them?

RTR.