GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 9 of 9
  1. #1

    Default Thinking of switching to synthetic motor oil

    Okay i have 108,000 on my truck and I'm thinking of switching to synthetic oil in my motor. Any ideas if this is a good or bad idea? Someone told me that it's not good because i could start burning oil...is this true?
    2000 Chevy Silverado 4WD Classic
    2'' lift Torsion Keys and air shocks
    33/12.50 Hankook Dynapro M/T
    3 1/2'' down pipe back 6" Tip
    Dodge Towing Mirrors
    Smoked Tails, Cab Lights, and Side Marker Lights
    1% Rear and Side Window, 20% Front Tint
    American Racing Wheels/ With a custom black paint
    Cold Air Intake
    Edge Performance Chip
    Custom Audio System
    LED Tails
    Black background headlights and parking lights

  2. #2
    Jr. Mechanic
    Join Date
    Apr 2010
    Location
    Ortonville MI
    Posts
    136

    Default

    My 2007 was switched to mobile 1 synthetic at 40k now with 70k it will burn 2-3 quarts in 3k mile. Took it to the dealer and they changed the oil put their non synthetic oil in it and was a half of a quart low at 3k miles. So who knows my 2004 had Mobile 1 syn its whole life and never burnt a drop.

    07 NBS Crew cab SLT 4x4

  3. #3

    Default

    I was just worried about the burning oil thing with the amount of miles i have that my main worry

  4. #4

    Default

    Most advise against it. Some oil companies have a special oil for those over 75,000 miles. I believe it to be semi synthetic but it seems to give a bit more MOG and no oil burn on a 2000 Cadilac Deville
    2010 Chevy Silverado Z71 ext cab.4x4
    72 Monte Carlo 350-415 hp- sold (June 2011) to pay medical bills
    79 Impala 350 4bbl 375 hp- sold (June 2011)to pay medical bills
    oldfart2413@gmail.com

    "If He asks you to go a mile go two"

  5. #5
    Legend

    Red Z71 Max's Avatar
    Join Date
    May 2011
    Location
    Myrtle Beach, SC
    Posts
    2,335
    Blog Entries
    1

    Default

    It is not advised to switch. If you used synthetic from the start you should use it throughout the life of the engine. The same goes for conventional oil. Switching can cause abnormal wearing on surfaces such as bearings and piston rings. Also if you have a small leak anywhere, the use of synthetic will leak alot worse.

    (Scott) Myrtle Beach, SC
    January 2012 ROTM WINNER
    2011 GMC Sierra Z71 MAX 6.2 L w/ Trailering Package
    Rough Country, XD Rockstars, Nitto Trail Grapplers, N Fab, Lund Genesis, Putco, Gator Grip,
    Flowmaster 40 series, Diablosport InTune, Banks Ram Air CAI,
    WeatherTech, AVS Aeroskin, Tow Mirrors, Upgradeyourauto.com

  6. #6

    Default

    Sounds like it's really not a good idea. I've always heard that is wasn't wise to switch but wasn't sure if it was just personal opinions.

  7. #7
    Sr. Apprentice BoneHead's Avatar
    Join Date
    Feb 2012
    Location
    San Angelo most of the time, Houston at others
    Posts
    61

    Default

    I also advise against it. I had a 86 Camaro a few years back with the 305. O'Reiley happened to be out of straight 30 weight oil, so I put some 10W-30 in for that ONE oil change. I burned 2 quarts out the first 500 miles. Changed back to straight, or regular, 30 weight oil, no issues. Both oils were Castrol brand. HD30 on the one, and GTX 10W-30 on the other.
    1998 K1500 Suburban
    1977 Chevelle Malibu

    "I'm proud to defend your right to be an idiot!" From a friend in the military.

  8. #8

    Default

    Yeah my main goal was to have longevity of the motor that's why I was thinking of changing to synthetic. Wish i could have bought the truck new so it would've had it to begin with. I'm not really want to risk the chance of messing up my motor for a little fuel mileage.

  9. #9

    Default

    Quote Originally Posted by BoneHead View Post
    I also advise against it. I had a 86 Camaro a few years back with the 305. O'Reiley happened to be out of straight 30 weight oil, so I put some 10W-30 in for that ONE oil change. I burned 2 quarts out the first 500 miles. Changed back to straight, or regular, 30 weight oil, no issues. Both oils were Castrol brand. HD30 on the one, and GTX 10W-30 on the other.
    What was the ambient temperature. As both of these oils are conventional and neither are synthetic if I recall correctly.

Similar Threads

  1. NEW: European Car Formula Synthetic 5W-30 Motor Oil (AEL)
    By 1st Synthetics in forum 1st Synthetics
    Replies: 0
    Last: 11-01-2010, 08:38 PM
  2. switching to synthetic oil
    By Custom04Chevy in forum Performance & Fuel
    Replies: 19
    Last: 05-15-2009, 09:52 PM
  3. Switching From Petroleum to Synthetic
    By 1st Synthetics in forum 1st Synthetics
    Replies: 2
    Last: 03-12-2009, 09:24 PM
  4. Synthetic or regular motor oil
    By spyder in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 9
    Last: 01-23-2009, 10:45 AM
  5. synthetic or traditonal motor oil?
    By NixZ71 in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 03-14-2008, 11:51 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •