Should i use a synthetic blend or a full synthetic oil on my car?

its a 1999 grand prix gtp and it has 106,000 milesShould i use a synthetic blend or a full synthetic oil on my car?
Geepers, I've got a tough act to follow. If your has no leaks and does not use oil, full synthetic is the way to fly. If you notice no oil company actually informs the costumer the precentage of synthetic that's is in a synthetic blend. If you dump molasses (Lucas Oil Stabilizer) along with regular motor oil the total volume of oil through the oil galleries slows down. Using the correct viscosity (5W-30) pumps to critical engine parts faster. Cold starts is where 85% of engine wear origionally happens. Light oil cools better because a larger volume reduses frictional heat more efficiently. Any motor makes more horsepower with light oil. It's a proven fact the oil pump does not work as hard using low viscosity motor oil.





If you decide to switch to a fully synthetic motor oil, not to worry, Thare are no PTFE's in synthetic oil. If you are looking for Teflon (PTFE) take time to read: Teflon Motor Oil Additives.





If what one of the answerers above said it true he should take time to review Joe Gibbs Racing Oil. I'ts a fully synthedic racing oil only. It should be not used in street cars. The bottom line is the Gibbs Team uses 0 weight oil for qualifying, 0W-20 for restrictor plate races and 5W-20 during races were the plates are not used. If an 850 horsepower motor using such light oil, how come they don't all blow up?





There's absolutely no reason you should shy away from a fully synthetic motor oilShould i use a synthetic blend or a full synthetic oil on my car?
I would go with Maxlife full synthetic from valvoline. It will give you the best


engine protection, gas mileage, and overall performance out of your car. It is also the best in cold start situations, meaning that it protects the internals of the engine when it gets into the winter season., the bearings rely on motor oil more than anything else so keep them happy. Also the maxlife additives reduce leaks deposits sluge and friction, the four main things a higher mileage engine struggle with. Plus valvoline synthetic is now 4x more effective against wear than the leading synthetic(Mobile 1)


I use it my self and it does great. Any more questions about oil just ask me. I work for valvoline and i am very educated on motor oil! and on the flow topic, valvolines synthetics keep their viscosity now matter what extreme tempratures they go through and your car i think calls for 10w30 and if it does i would go with 5w30 it brings your engine up to operating temprature quicker and it keeps it there
A blend. Full synth has lower viscosity and too much teflon or polymers working against viscosity and necessary tolerances or some resistance or 'tension' within the engine, and allows old engines to over-rev and fly apart. Old engines already have too much clearance nearly everywhere and the synthetic oil doesn't help much, it flows through them like water.





I use Castrol GTX for high mileage engines, even if new, and oil is never enough. Gotta have Lucas Oil Stabilizer. Overall, still cheaper than a synthetic refill. Please do as racers do. Keep your stuff in top shape, always.





http://www.lucasoil.com/index.sd
Full Synthetic. Much better oil quality for the price! You'll get a lot more miles out of each change also. Probably about 10k. With your miles I would look to change it about 7500. You save the extra money with less changes, and less hassle!
if u havent used syn from the beginning it does not help . try the teflon oil filters and stay with your usual oil