is it normal to add up too 3qts of oil between changes? - So i drive Sierra 1500 5.3 with about 95k miles. I noticed the oil gauge a little ...

sd08sierra · by **sd08sierra** [OP] » Dec 27 2011, 3:39am

So i drive Sierra 1500 5.3 with about 95k miles. I noticed the oil gauge a little off today so i checked the oil and added about 2.5 qts of oil! Is that normal? I checked to see if i have a leak but can't find any evidence of one. My DIC syas the oil life is at 63% so i had me wondering if its okay?

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wheeler82 · by **wheeler82** » Dec 27 2011, 3:43am

how many miles on that oil? and what kinda oil you using?

ASTE25 · by **ASTE25** » Dec 27 2011, 4:27am

Yes, we need some more information. How many miles have you got on the oil that is in the engine?

txsierra1974 · by **txsierra1974** » Dec 27 2011, 4:45am

There is nothing normal about being so low on oil that you have low oil pressure. I would check it daily.

ASTE25 · by **ASTE25** » Dec 27 2011, 4:51am

Yes, txsierra1974, I agree that the low oil pressure is not normal. I think we were answering the part about it being 2 1/2 quarts low. We kinda took it as a given that the low oil pressure was not normal.

sd08sierra · by **sd08sierra** [OP] » Dec 28 2011, 4:21pm

It's been about 4 to 5k?

sd08sierra · by **sd08sierra** [OP] » Dec 28 2011, 4:22pm

Oh and i use Castrol Full Sythetic SAE 5 30W

Z15 · by **Z15** » Dec 28 2011, 4:37pm

There is an oil consumption problem with some 2007+ AFM aluminum engines. Check with the dealer on this as there are several fixes that they make you jump thru before they put in new rings and pistons. The oil forms deposits in the deactivated cylinders and causes problems with the rings sticking in certain position and allowing oil to get by.

Here is just one of numerous bulletins on this

#10-06-01-008A: Engine Oil Consumption on Aluminum Block Engines with Active Fuel Management (AFM) ( Install AFM Oil Deflector and Clean Carbon from Cylinder) - (Sep 28, 2010)

Subject: Engine Oil Consumption on Aluminum Block Engines with Active Fuel Management (AFM) (Install AFM Oil Deflector and Clean Carbon from Cylinder)

Models: 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT

2007-2008 Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe

2007-2008 GMC Sierra 1500, Sierra Denali, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

2008 Pontiac G8 GT

Equipped with Aluminum Block V8 Engine with Active Fuel Management (AFM) (RPOs LC9, LH6, L76, LFA, L92)

with Greater than 45,000 km (28,000 mi)

If this does not work, new rings and pistons are next.

bsnowden · by **bsnowden** » Dec 28 2011, 6:34pm

This sounds like a big problem to me I use castrol gtx high mileage on my 1999 silverado with 170,000 miles on it.I usually only have to add about 1/2 to 3/4 of a quart in between oil changes on mine

rdss · by **rdss** » Dec 28 2011, 8:46pm

Bsnowden, you don't have to worry about this exact problem becuase you don't have AFM.

I just Flashed my PCM with my InTune last night and deactivated the AFM feature, it was kind of nice slowing down for a turn, turning and not having the shutter under exceleration while the truck figured out how to go from 4 to 8 cylinders.

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is it normal to add up too 3qts of oil between changes? - So i drive Sierra 1500 5.3 with about 95k miles. I noticed the oil gauge a little ...

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