What motor oil you running

[Slow5.0]

Post what motor oil you running ,synthetic or non synthetic and weight

 

[Killercanary]

Mobil1 10w30 here.

 

[zenboy99]

Mobil1 synthetic 10W30

 

[BDAWK2002]

Quaker State 10/30.Engine was burning up the synthetic too quick.

 

[illwood]

Usually Mobil 1 10w30 with a Napa Gold 1515 (Wix) filter.

Today, I'm doing an oil change and going to run AMSOIL 10w30 with the same filter.

(Heard that Mobil 1 has some chlorine in it that is bad for the engine.)

 

[sade04]

Castrol GTX 10w30 with a ford filter


switching to synthetic this late (106K) wouldnt make sense right?

 

[Hoytster]

Mobil1 10w-30

 

[Grn92LX]

Mobil 1 10W40 extended performance synthetic with a Mobil 1 extended performance filter.

Might try royal purple or amsoil next.

 

[MysteryMachine]

Castrol GTX 10w30. Use it in all my stuff

 

[SWYZ721]

AMSOIL 5W30, cuz I'm a lazy batch who doesn't like to change the oil very often.

Should be switching to 10W30 in a month.

 

[Swarzkopf]

I use whatever synthetic is on sale...20w50 in the summer and 10w30 in the winter.

 

[nazstang]

Quaker state high horsepower(syn. blend) 5w30 winter 10w30 summer with a ford filter.

 

[TheDamned]

the one on sale.

 

[final5-0]

Mobil1 10w30 here.

Same for me

Grady

 

[Black95GTS]

Castrol GTX 10w30. Use it in all my stuff

Same here.

 

[The Green GT]

I dont use motor oil, it frees up a few horsepower.

 

[drewzx3]

castrol snytec 10w30

 

[MysteryMachine]

oh forgot with the lucas oil stuff.

Kinda OT: My dad told me he used syn. 1 time in a car and it messed up and never used it after that. He told me don't use it and I haven't. Probably has changed since then but why change now.

 

[wytstang]

Motorcraft 10w30 FL1A filter

Kinda OT: My dad told me he used syn. 1 time in a car and it messed up and never used it after that. He told me don't use it and I haven't. Probably has changed since then but why change now.

What does he mean it messed it up?? Syn are just more refined and stand up to "shearing" better then dino oil does. What has happend is over the years some cars that aren't well maintained develope crud and it clogs oil leaks and what not. Then they decide to switch to syn that have more cleaning agents and it "incloges" old wounds so they automatically blame syn for leaks.

 

[Swarzkopf]

The only stuff to stay away from is that "Synthetic Blend" crap like Castrol sells...

It's a literal mix of their synthetic and conventional oils- while this sounds good in theory, in practice it can lead to a dangerous situation under extreme heat and high RPM...the two oils can separate, creating a dangerous condition in which proper lubrication isn't provided.

While this isn't likely to happen normally, the fact that it can happen period is enough to keep me away from "synthetic blend"...that, and for $1 more a quart I can get the real synthetic stuff.