OK, I know it's been beaten to death *POLL*

[banditmwp]

Conventional or synthetic?

Right now I am running Castrol GTX 10w30 because it's free (what we use at work)

 

[red94fiveo]

Mobil 1 supersyn all the way!

 

[willys1]

Conventional or synthetic?

Right now I am running Castrol GTX 10w30 because it's free (what we use at work)

As long as you change it "every 3000 miles" regular Dino oil is fine ,,,,,,,,,,,,,,

 

[banditmwp]

actually it's more like every 2200 miles for me

if/when we get Castrol Syntec in bulk...well, I won't say I'll get it, but the oil tank inventory may have to be adjusted each quarter

 

[bock]

mobil 1 full syn.

 

[MustangGlx]

if your cars in good shape get the synthetic, if it leaks or burns oil stay with the conventional stuff. but if your gettin the castrol for free go with that

 

[sleeper89]

definately full synthetic. if not for the additional ponies, then do it for the additional protection. conventional oils are supposed to be good for ~3k miles while synthetics are said to be good for ~6k-7k miles. also synthetics can handle extreme conditions better (ie overheating etc) and don't break down as easily so they'll leave less sludge in your engine.

FWIW when i swapped my whole drivetrain for synthetics the difference was HUGE. the car pulled harder and smoother.

-steve

 

[bigsparky]

If I want to change from conventional to synthetic is there anything special i need to do?? Does it need to be completely flushed out before hand?? Should i fill with synthetic, run for a while, then re-change it??

 

[livenfine]

As long as you change it "every 3000 miles" regular Dino oil is fine ,,,,,,,,,,,,,,

Agreed, for the street, but if you road race or autox, use synthetic.

 

[YardSpecial]

I use Mobil 1, at $3.72 a quart U can't beat the EXTRA insurance it provides !!

I noticed a BIG difference in traffic during HIGH Heat summer.

Stang has WAY over 100K mile PLUS and does fine with 10w-30.

The leak myth is just that, a myth.

Fix the dam leak !!!

 

[StreetStang37]

definately full synthetic. if not for the additional ponies, then do it for the additional protection. conventional oils are supposed to be good for ~3k miles while synthetics are said to be good for ~6k-7k miles. also synthetics can handle extreme conditions better (ie overheating etc) and don't break down as easily so they'll leave less sludge in your engine.

FWIW when i swapped my whole drivetrain for synthetics the difference was HUGE. the car pulled harder and smoother.

-steve

I have some dyno runs of synthetic vs. conventional oil. I need to find them, but the conventional oil made about 2 more hp than the synthetic, while the synthetic made about 2 more on the low end. basically they were a wash power wise.