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Is Your Gmt-900 Truck Or Suv Using Oil

Is your GMT-900 using oil  

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I change my truck every 3000 miles. I also own a 2008 Toyota Sienna and use Conventional and change it at 3000 but I'm going 100 % Synthetic with both vehicles now, 2008 Nissan Altima and I use  Mobil Synthetic  (that's what previous owners used)and change every 5000 and a 2010 Toyota Camry and I use  Valvoline Synthetic (previous owners used Havoline Synthetic) and change every 5000.

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5000 miles on full synthetic with a good premium oil filter will be all you need. 

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^^^ This.


I rank additives with "mechanic in a can",  whiz-bang quick fixes. All 1 step below useless ... except for getting you to part with your hard-earned money.

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92,005 miles   Still going Strong 

Burns NO oil  No oil consumption, No SLUDGE..

 Engine Oil stays clean  to 4,000


4,000 Mile Oil change interval (±50 miles)

Hybrid Vortec 6.0L LFA Aluminum Engine (LS2 based)

80HP Electric  motor 

:driving:  379HP 472 ft•lb torque combined output 😬


she runs a custom blended  mobil1 5w30 (5qt) & Mobil1 0w30 (1qt)


  and a steady diet of Mobil or Chevron Fuel,  91 octane only for Maximum Performance



Piston Style Flat Top, with valve reliefs

 (for VVT duh)

Casting Numbers 799, 243
Material Aluminum
Edited by bg1988

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75k miles on my 09 Sierra, no oil burning issues to speak of. Did the valve cover swap, added an oil catch can and got a range afm disabler once I got on this forum and realized how many people were having issues. I figured this is cheap insurance just in case oil consumption did start. I did notice a big oil stain on the block underneath spark plug 1 when I changed my plugs last year, that was before I added the mods stated above. No new stains since. 

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