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    JAC53's Avatar
    JAC53 Posts: 48, Reputation: 1
    Junior Member
    		  
    #1

    Nov 25, 2010, 10:59 PM
    New 2011 Avalanche owner, Synthetic or Regular oil?
    When time to do first oil change, I am told to use synthetic oil such as Mobil 1 or Amsoil. What is the preferred or recommendation for this.

    Thanks
    parttime's Avatar
    parttime Posts: 1,440, Reputation: 113
    Ultra Member
    		  
    #2

    Nov 26, 2010, 05:22 AM

    Your owners manual will have the recommended oil for your vehicle. Good luck
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #3

    Nov 26, 2010, 06:49 AM

    Synthetic, of course. Either Mobil 1 or Amsoil SAE 5W-30 are excellent choices. I would also use a premium oil filter (e.g. Mobil 1 EP, Amsoil Ea, or Purolator PureOne).

    In 1993, I started using Mobil 1 SAE 5W-30 in my 1993 Civic DX from the very beginning. I did just what Mobil recommended--drove the car from the show room to the service bay and start using full synthetic engine oil. 18 years later, the car still tests like a new car, when it's emission tested. It's allowed 200 ppm of CO--it tests at 6 ppm. Emissions testing is the best overall test of the condition of an engine. At 1,100 miles, I drained the manual transmission and refilled with Mobil 1 SAE 10W-30. Today, I use Amsoil SAE 5W-30 Synthetic MTF.

    You may enjoy reading these links:

    https://www.askmehelpdesk.com/cars-t...ml#post2162069

    https://www.askmehelpdesk.com/cars-t...ml#post2295563
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