Afm Specific Oil?

[pm26]

Why doesn't GM market a special oil for AFM equipped engines that would cure all the oil burning problems?

 

A: Because only snake oil would work!

[old-chevy-dude]

cause it isn't the oil that causes the problem it is a design flaw in the heads.

 

 

TSB:

 

#10-06-01-008: Engine Oil Consumption on Aluminum Block Engines with Active Fuel Management (AFM) (Install AFM Oil Deflector and Clean Carbon from Cylinder) - (Aug 24, 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)

 

 

 

 

--------------------------------------------------------------------------------

 

Condition

Some customers may comment about engine oil consumption on vehicles with 45,000-56,000 km (28,000-35,000 mi) or greater. Upon further investigation, a technician may find that the engine uses 0.946 L (1 qt) of oil in as little as 1,200 km (800 mi). After this bulletin is completed, the vehicle should be driven 3,200-4,800 km (2,000-3,000 mi), then tested for oil consumption again.

 

Cause

This condition may be caused by an uncovered AFM valve that sprays oil on the bottom of the cylinders when the vehicle is in four cylinder mode. Over time, the rings cannot handle the volume and begin to stick with carbon. At that point, the vehicle oil usage may go up considerably.

 

Correction

A new AFM shield/ring cleaning process has been developed to restore the function of the rings. If the oil economy has not improved to no more than 0.946 L (1 qt) of oil consumed in 3200 km (2000 mi) after cleaning, it may be necessary to replace all of the pistons and piston rings

[pm26]

Was this design flaw corrected?

[old-chevy-dude]

Was this design flaw corrected?

 

 

no clue. last I read is it happens mostly on the Aluminum motors, I don't really know much more on it other than (touches wood) mine hasn't started doing it yet.

[Superperv23]

How is there possibly another thread on this?

 

I have a 2011 with about 2500miles on it and I have had to put in 6.1 quarts of oil already so make up your own mind if it corrected or not

[Austin83]

How is there possibly another thread on this?

 

I have a 2011 with about 2500miles on it and I have had to put in 6.1 quarts of oil already so make up your own mind if it corrected or not

 

If that was my truck, I'd be at the dealership raising hell demanding that it be fixed. I'd also be on the phone with GM.

[RyanbabZ71]

Topic Closed