Synthetic Oil

[Misfit]

In celebration of my Titan's 100k milestone, I treated it to a full synthetic oil change today.

Before, I was running conventional oil and changing out every 3500 to 4000 miles.

What is the safe limit on full synthetic? 6k? More?

For the most part, my driving style is spirited. Nothing too crazy, but I do like to accelerate quicker than most other vehicles.

[R3DN1CK]

7500-10k

[nickspeed]

6K is fine on the synthetic. I got 5K on my mobil1 but I like to redline it often and I tow 5000lbs every other weekend, so 6K is fine for you truck. You could even go up to 7K if you want. What brand are u running if I may ask?

[R3DN1CK]

sooner is better but most synthetics are tested to 10k, not reccomended but acceptable. Mobil has the new oil they claim 15k. I have gone 10k on elf oil 5w40, but would not tell anyone to do it. Normal oil is 3750 and syn puts you at 7500 per normal dealership guidelines. this thread is going to go bad really quick. opinions are like... everybody has one.

[Misfit]

What brand are u running if I may ask?

Castrol Syntec. I was lazy and let the dealer change it. When I change it myself, I will be using Mobil 1.

[nickspeed]

Castrol Syntec. I was lazy and let the dealer change it. When I change it myself, I will be using Mobil 1.

Castrol is very good, them and M1 are neck and neck.

[Desert Duner]

I use Mobil 1 0w-20 in the winter, 5w-30 in the spring and 10w-30 in the summer. I change it every 4,000 miles

[nickspeed]

I use Mobil 1 0w-20 in the winter, 5w-30 in the spring and 10w-30 in the summer. I change it every 4,000 miles

That's insane! But you motor will last along time for shure!

[R3DN1CK]

Castrol Syntec. I was lazy and let the dealer change it. When I change it myself, I will be using Mobil 1.

We use castrol syntec for our synthetic oil changes at work... great product. We also have Mobil1. But our normal syn oil changes are sytec. I am putting the Castrol GTX high mileage in my P.O.R.N mobile.

[etalian2005]

I'm running Mobil 1 full synthetic and have been since 5000 miles. I change it religiously every 5000. Is that too often?