Who uses synthetic oil

[91stealth]

alrite my g/f's stealh tt has 103,000 miles on it and i was wondering if i could run amsoil or redline or something of the nature in it? Also i was wondering if an amsoil oil filter would be fine too? Thanks

[Gateway]

I use valvoline 10w30. 96k miles.

I was told by a mechanic that valvoline is good oil for an engine.

[Thourun]

I use mobile 1 10w30 100k miles, Honestly I don't think it matters much among the top brands. What I want to know is the difference between synthetic and natural.

[got mph]

I based on studies ive read mobile 1 is a top quality full synthetic and that is what i use in all my cars except the stealth which i use redline.
It is very important not to overlook the oil filter, there are big diffs. in them. long story short go with mobile 1 or k&n oil filters, they use full synthetic media and can handle higher oil pressures that would blow a hole through paper filters. i think i found the info at (stealth316.com).
now if anyone can help me with my driveline issue id appreciate it.

[Igovert500]

I use mobil 1 synthetic 10w30, it is a prefered brand amoung many 3s'ers

Redline and royal purple are extremely good brands as well in all parts of your car, not just engine oil, and I would highly recommend them.

As far as oil filters...this is a really good read, it is an independent study on all the main brands:

http://people.msoe.edu/~yoderw/oilfi...lterstudy.html

got mph, I used this as a guide for driveline issues
http://www.stealth316.com/2-awddrainfill.htm
i used synchromesh and mobil 1 75w90 if I remember correctly and it improved shifting quite noticeably.

[sLADe781]

I use Mobil 1 Synthetic 10w30.

[mitsuGTvr4]

i use mobile 1 0w-40, which is really thin.....i heard it was supposed to be good on cars with turbos.

[Getsum3kgtsl]

Make sure it doesn't have any oil leaks. If it does, just use regular oil or a high mileage oil, cuz synthetic will leak out fast and you'll need to add frequently, which means more money gone

[Hotshot8792]

i'm switching to mobile 1 15w50 here, not too worried about a leak, just replaced the rear main seal which is the most common place for a leak on our cars.

[Teazrsnow]

well the best out there is BG,Mobil 1,royal purple, and redline but they are said to give 3-5% power and the others won't be much different but some people notice that the oil leaks out or is burned off faster than normal oil