synthetic or not??

[.xShAgUaRx.]

My car has about 204k. Ive been wondering if i am able to go with a full synthetic or synthetic blend or am i better off going with a good conventional oil? i currently have some quaker state with slick 50 for my next oil change im gonna do in the next day or two.

[Chris Crash]

IF you switch to synth at this point, you could start noticing some leaks (I think). I would stick with the dino.

Why do you want to switch?

[.xShAgUaRx.]

if my engine was new enough royal purple. but i wont consider that at my milage. semething like castrol synthetic blend. i have a good conventional picked out. for conventional ill use quakerstate.

[hill8570]

Have you been under the valve cover recently (best way to check for sludge)? Generally, I wouldn't switch to synth on an old engine unless you're having sludging problems, and even then might just switch to a quality high-detergent dino (such as Castrol GTX) with shorter oil change intervals.

Personally, I switched to running synth on mine (I tend to slop my OCIs, and my '95 5S-FE tends to sludge dino), but I'm also having to replace drippy oil seals as I get around to them....

[carsrus]

I would stick with conventional, there arent any benefits to running synthetic in an older engine.

It will most likely just start leaking and burning oil faster.

[larocque44]

Im running 10w30 castrol syntec have been for the past 2 months havent noticed any leaks had 213,000 now at 215,000 and running great should help with cold winter starts as well.

[2win2rbo]

As above, if you're having sludge problems, synthetic would do good. That is if you're seals have already been replaced.

[sc2dave]

Originally Posted by .xShAgUaRx.

with slick 50 for my next oil change

this stuff is garbage.This company has gotten sued for all the misleading claims.

[JohnGD]

IMO a good conventional oil and a shorter oil change interval would be better. However, if you want to try a blend check out the Motorcraft oils at WalMart. Autozone also has Castrol blends with a Bosch filter on sale. Again, I'd still go with a shorter interval instead of trying to lengthen it.

Originally Posted by .xShAgUaRx.

My car has about 204k. Ive been wondering if i am able to go with a full synthetic or synthetic blend or am i better off going with a good conventional oil? i currently have some quaker state with slick 50 for my next oil change im gonna do in the next day or two.

[.xShAgUaRx.]

as far as i know i dont have a real big sludge problem. usually i try to change my oil every 3000 miles since i do alot of city driving.