Synthetic oil

[wanderso]

Actually - the Synthetic oil change interval for a newer Subaru outback is over double for using synthetic oil. This site talks a bit about the benefits.

http://www.subaruofkeene.com/synthetic-oil.htm

Yes I realize we are not talking about Subarus. My engine in my '11 outback is identical to the '12 and newer and I can use Dino oil but the newer ones can't. The benefit is better mpg and fewer changes.

I use synthetic anyway.

[scep]

Originally Posted by wanderso

Actually - the Synthetic oil change interval for a newer Subaru outback is over double for using synthetic oil. This site talks a bit about the benefits.

Subaru Synthetic Oil - Fact, Fiction and Requirements

Yes I realize we are not talking about Subarus. My engine in my '11 outback is identical to the '12 and newer and I can use Dino oil but the newer ones can't. The benefit is better mpg and fewer changes.

I use synthetic anyway.

pssst...

* Because turbos run hotter, oil change frequency is every 3,750 miles. Always consult owner's manual for proper oil recommendation and warranty maintenance booklet for service intervals.

[wanderso]

Indeed. I change it at the 3750 interval (mine is the non turbo) even though using synthetic to assure warranty coverage despite if it was a year newer with the same engine I could go longer.

[ZeroG]

I've used synthetic for the past 12 years. I have extended my oil change interval and verified with Blackstone Labs via oil tests that the oil is doing it's job. In my car I extended to 7 - 8k, Blackstone said I could have run the oil another 7k miles.

In my go-fast boat (25ft Baja w/ 454) it ran 6 to 8 degrees cooler constantly. Less friction. Big blocks are known for using a little oil. With Dino I had to add oil every 12 to 15 hours. With Mobil One that extended to 20 to 25 hours depending on how hard I ran the boat. After I saw these results I switched my truck, tractor and even my ZTR mower. All have syn in them now. Cooler operation and yes, I do extend the change interval. I got over 1700 hours on the Baja, over 175k on the car and had over 200k on my old truck when I sold it and bought a newer one. Synthetic has done me well and that is all I will put in my equipment. Blackstone Lab testing assures me I am not hurting a thing by extending the change interval.