I own a 1995 gmc Sierra 1500 5.7L 4x4 with 170,000 miles will changing to synthetic motor oil hurt anyhting??Will changing to synthetic motor oil hurt and older truck?It shouldn't hurt a thing-- nor should it leak, as long as all your seals and gaskets are good. If you find a leak, then you better track down the source and get it taken care of regardless of whether you're using %26quot;fossil%26quot; oil or synthetic.
I once had a neighbor who claimed switching to synthetic after years of running regular motor oil caused his engine to lock up. Of course, I found out later that he'd only been changing his oil once every year or so, while putting about 30,000 miles a year on his car. Methinks that had more to do with it than the switch from regular to synthetic oil!Will changing to synthetic motor oil hurt and older truck?No.
But it will leak oil.Will changing to synthetic motor oil hurt and older truck?i wouldnt switch to synthetic oil.just go with a high mileage oil.probably 10w30.Will changing to synthetic motor oil hurt and older truck?My first move when I buy a car...and I ONLY buy used cars...is to change the conventional oil out for synthetic. The oil serves to reduce the friction that can occur when metal parts touch and the higher viscosity (the degree to which a liquid flows) of synthetic oil means it will stay suspended longer and maintain a higher degree of lubrication so the parts will wear down less quickly.Will changing to synthetic motor oil hurt and older truck?My friend, changing to a top of the line full synthetic oil is the best thing you can do for your vehicles engine. The reason full synthetics are so expensive are because they are about three times better than regular lubricants. I started using full synthetics when they first came on the market. My 1995 Cummings diesel is over 200k and still holds the same oil pressure as when it was new. My 1996 Jeep cherokee the same. If you have oil leaks now then you will still have leaks when you change to the synthetic. The synthetic does nothing to cause leaks or prevent leaks, its just a mighty fine lubricant. You will however probably get more fuel mileage, extend your engines life and most of all You can go twice as long between oil changes. That's correct. I only change my oil and filter every 7000 miles. Been doing this for nearly 18 years now.
You will hear a lot of old wives tales\scare tactic's from people afraid to try the synthetics, but pay it no mind. It is sad that people listen to and pass on crap they know little to nothing about. I have a brother inlaw that drove his Oldsmobile v6 over 300k and only had to replace atimingg chaintension-err in those miles. He sold the car and it wa still on the road 2 years after he sold it.
My personal preference is the castrol full synthetic but any of the top name brands will be of like quality. You do still need to stay with the samerecommendedd weight specified by the factory. If the factory stated 10 w 30 then stay with 10 w 30
Take the plunge you will not be sorry
