what's the difference between auto oil and syantec?

[WoofyJr]

I was going to do the oil change and noticed that there are two different kinds of oil on the shelf this morning. Do u know any difference bewtten Brand "CASTROL GTX" and "Castrol Syantec" ???

 

[HiTek21]

Isn't GTX Just standard motor oil and the other one Synthetic?

 

[thawolfman]

Text

 

[JC]

'GTX' is regular, petroleum motor oil.
'Syntec' is partially synthetic motor oil, the benefits of which are greatly debated (even here on ATOT!)

JC

edit: OK, Syntec seems to be fully synthetic.

 

[DrumminBoy]

so is synthetic worth the extra money?

 

[HiTek21]

If you car is brand new off the lot yes, if your car has millions of miles not worth it.

 

[FrustratedUser]

For a regular car with oil changes every 3k miles, nah.
For a high performance car, maybe.

Don't put synthetic in a car that has been running regular oil since it can dissolve dirt from inside the engine and cause klogging.

 

[Ylen13]

Originally posted by: FrustratedUser
For a regular car with oil changes every 3k miles, nah.
For a high performance car, maybe.

Don't put synthetic in a car that has been running regular oil since it can dissolve dirt from inside the engine and cause klogging.

didn't they change that to 3750 miles now. Up from 3000?

 

[WoofyJr]

Originally posted by: thawolfman
Text

Thanks... It's helpful... I should have check on website first before posting this topic... I still am not sure if it's worth to buy synetc on new truck. I will stick to the regular oil and change every 3000 miles.

 

[boyRacer]

There might be better synthetics out there... there was another thread about this today i think.

 

[Zenmervolt]

Originally posted by: FrustratedUser
For a regular car with oil changes every 3k miles, nah.
For a high performance car, maybe.

Don't put synthetic in a car that has been running regular oil since it can dissolve dirt from inside the engine and cause klogging.

Synthetic does not have any more detergent than normal oil. Therefore it will not dissolve dirt and cause clogs. While the enhanced flow capabilities of synthetic may cause it to leak more than conventional oil when used in an old engine, there's no real threat to the engine itself anymore.

ZV

 

[thomsbrain]

Originally posted by: Ylen13

Originally posted by: FrustratedUser
For a regular car with oil changes every 3k miles, nah.
For a high performance car, maybe.

Don't put synthetic in a car that has been running regular oil since it can dissolve dirt from inside the engine and cause klogging.

didn't they change that to 3750 miles now. Up from 3000?

a lot of cars really don't need it until 5000, and some manufacturers only recommend 7000.

 

[boyRacer]

But if you were a car freak... you know you'd still change it at 3000... maybe even before that if you have a rotary and you're really anal...

 

[KokomoGST]

Originally posted by: Zenmervolt

Originally posted by: FrustratedUser
For a regular car with oil changes every 3k miles, nah.
For a high performance car, maybe.

Don't put synthetic in a car that has been running regular oil since it can dissolve dirt from inside the engine and cause klogging.

Synthetic does not have any more detergent than normal oil. Therefore it will not dissolve dirt and cause clogs. While the enhanced flow capabilities of synthetic may cause it to leak more than conventional oil when used in an old engine, there's no real threat to the engine itself anymore.

However, it does have additives that break down engine deposits which are typically bad for your engine. But if your engine seals are being held together by those heavy deposits, it can be bad. So if you add synth and your car starts leaking like crazy? Well, lets say your engine is prolly on it's last legs before a rebuild anyways.

Synth is especially good for turbo'ed cars since conventional oil is less resistant to high temps and has a greater tendency to coke in the turbo bearing. Synth has better flow qualities though some people have debated the shock properties of synth vs conventional.

 

[LAUST]

As far as engine, I would run Syn in a high performance or a Boosted vehicle, but not in an older car or an econobox really

as far as in an automatic tranny, run away from Syn, stick with the Dino there

I put Syn in my rear axel, I do like it over the dino there, it really silenced my locker up