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synthetic oil

2008 SILVERADO

synthetic oil

Postby 1buckhunter [OP] » Feb 22 2011, 7:19pm

I bought this truck a month ago, the previous owner informed me that he has put synthetic oil in the motor. Ounce you have synthetic oil in the motor can you switch back?
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Re: synthetic oil

Postby Alphatonic » Feb 22 2011, 8:29pm

I would not recommend it. They dont mix well. Synthetic creates a barrier that conventional cannot penetrate. Had a friend try to switch back to conventional and everything started knocking and pinging. It didnt stop until he switched back-back to synthetic

Not sure why you'd want to unless you dont like the truck. Maybe the price.. but really if you think about it you dont have to change the oil NEAR as often with synthetic so in the long run you'll save money. UNLESS you burn or leak a lot of oil.
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Re: synthetic oil

Postby SpiritRT » Feb 22 2011, 8:41pm

There are many opinions on this topic. I’ve personally done it with no adverse effects. I’ve had customers switch back n fourth with no adverse effects.
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Re: synthetic oil

Postby totallscott » Feb 22 2011, 8:51pm

I say you can use normal oil if you want they do mix because they sell synthetic blend oil all the time. I would stay with full synthetic best for the truck and it will last longer. good luck
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Re: synthetic oil

Postby lohchief » Feb 22 2011, 9:06pm

Full synthetic is the only way to go if you want better protection,an increase in mpg,(small,but an increase)and longer change-out intervals.I haven't changed out mine yet because I only have around 700 miles on it.Once I have around 2k,I will change mine out to Royal Purple for the engine oil,and both diffs.JMHO.
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Re: synthetic oil

Postby 1buckhunter [OP] » Feb 22 2011, 9:25pm

What do u recommend for miles between changing with synthetic
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Re: synthetic oil

Postby EKinMN » Feb 22 2011, 10:59pm

Depends on the oil. I like to do 6,000. Then I do oil, clean the MAF, and rotate the tires....and a way I go again!
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Re: synthetic oil

Postby harper » Mar 04 2011, 3:40am

i would recomend staying with one once you find the one not only you like but your truck likes. this will get more important when you start getting higher miles. when i bought my truck i changed my oil and put non synthetic and instantly it started knocking. i put full synthetic Amsoil in it and it stopped making the noise!!!
Last edited by EKinMN on Mar 04 2011, 3:42am, edited 1 time in total.
Reason: Corrected spelling of Amsoil, just for Mikes benefit!
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