If you truly have tired valve seals, the only sure cure is replacement. Thicker oil may help only in the sense of hastening the need for replacement (in cold weather if you're at high-enough elevations) since it flows so poorly at low temps. Otherwise, the synthetic oil will simply increase costs if the engine is burning oil. There are some 'snake oils' available that temporarily swell tired seals and mask the problem for a while, but the only sure cure is a refresh.Hey guys.
As some of you know I have some problems with 1MZ valve seals burning oil and I was wondering if changing to Syntetic Oil would it help in something to the engine or I will be lossing my time and money?
The closest oil that I can get 20W-50 here in CR for the grade required in the engine.
What do you think?