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Thread: synthetic oils

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  1. #1
    Jr. Engineer
    Join Date
    May 2005
    Location
    Minnesota
    Posts
    282

    Default synthetic oils

    Does anybody really have a strong opinion on the synthetic oils? I buddy of mine wanted to put Amsoil in all his cars so we registered for an Amsoil dealership. He put it in an 03 H2 and a brand new maxima and says its great but I haven't done it yet. I've heard that switching to synthetic on older high milage vehicles makes them more prone to leaks and that its too late to justify the expense of the synthetic over normal.......

  2. #2
    Sr. Apprentice
    Join Date
    Jul 2006
    Location
    Spokane, WA
    Posts
    42

    Default RE: synthetic oils

    Synthetic oils are great. The friction is a lot less inside the engine, so there is less wear on the parts, lower temperature, better power, better gas mileage....etc. It also gets to operating temperature faster and is not as thick when it is still cold. The problem is that in any motor that runs with normal oil, there is carbon buildup inside the engine. The more miles, the more. If you put synthetic oil into a high mileage motor that always had mineral oil before, these residues can break free and ruin your gaskets, seals and even pistons, valves etc.
    Andy
    Spokane, WA
    1994 Chevy Suburban K2500 7.4 4WD

  3. #3

    Default RE: synthetic oils

    If you put synthetic oil into a high mileage motor that always had mineral oil before, these residues can break free and ruin your gaskets, seals and even pistons, valves etc.
    I've heard about this before. The question is when is too late to start using synthetics?

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  4. #4
    Sr. Apprentice
    Join Date
    Jul 2006
    Location
    Spokane, WA
    Posts
    42

    Default RE: synthetic oils

    As far as I know about 60,000 - 70,000 mls, although that greatly depends on driving style.
    Andy
    Spokane, WA
    1994 Chevy Suburban K2500 7.4 4WD

  5. #5

    Default RE: synthetic oils

    driving style.
    Well, when I was younger I used to have a lead foot. Now, It's more like a helium foot.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  6. #6
    Jr. Engineer
    Join Date
    May 2005
    Location
    Minnesota
    Posts
    282

    Default RE: synthetic oils

    so at about 190,000 miles I should probably stick with the mineral oil?

  7. #7
    Sr. Apprentice
    Join Date
    Aug 2006
    Location
    NW Indianapolis Indiana
    Posts
    60

    Default RE: synthetic oils

    I bought my 98 with 178xxx on the ticker. It would use a quart of regular oil in 3500 miles. Now that I use synthetic, it doesn't lose/burn any in 4,000 miles. It doesn't rattle as bad when I first start it. And I gained probably half a mile to the gallon.I use synthetic in anything/evreywhere I can..

  8. #8

    Default RE: synthetic oils

    Hmm, I think I might want to switch to synthetics. Anyone have anything they like better than anything else?

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  9. #9
    Sr. Apprentice
    Join Date
    Aug 2006
    Location
    florida
    Posts
    38

    Default RE: synthetic oils

    amsoil is the best out there i have a 86 gmc c1500 pick up at 185000 i changed to amsoil when it was about 2500miles i was losing oil pressure spoke to oil rep he said change oil filter an oil pressure came back up it was cleaning the inside of the motor now i have 210000 on motor an runs better then ever just bought my supplies for my 2001 chevy 2500 burb cost about 100 bucks but that was 2 oil filters,case of 5w30 air filter an motor flush my truck has 97000 it will have amsoil till the day i die my boat also has amsoil products in it hope this helped with question johnny

  10. #10

    Default

    Amsoil is definetley good but royal purple is just as good or better i use it in my crankcase with 170000 miles and the rear end i'm about to put it in the tranny. When i changed over from regular gear oil to royal purple 75 90 in my rear end i got 1.5 more mpg average that is just rear end oil!
    M.D.:sign0011:

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