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oil consumption

oil consumption

Postby tcspp5 [OP] » Jun 20 2012, 12:14am

so i have had my truck for about 5 months now its a 5.3L 2009 crew cab silverado. I've noticed that about every 2500-3000 miles I'm losing almost a quart of oil from consumption,its not leaking either. I'm not sure if this is a common problem in these trucks but it just seems odd to me that a truck this new would be doing this. if anyone could chime in that would be great, thanks!
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oil consumption

Postby Machster69 » Jun 20 2012, 12:45am

Very common, many delete afm with a tuner bc that has been to blame on some trucks...
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Re: oil consumption

Postby johndeere9203 » Jun 20 2012, 1:00am

AFM ........ AKA oil burners
2014 Camaro SS 6.2L, 6 spd, npp dual mode exhaust, short throw shifter. (426hp stock)
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Re: oil consumption

Postby Z15 » Jun 20 2012, 1:06am

Fyi - GM considers 1 qt every 2,000 miles to be normal use, as well as do many oem's.

Here is a snippet from a bulletin on oil consumption.
Subject: Information on Engine Oil Consumption Guidelines

Models: 2009 and Prior GM Passenger Cars and Gasoline-Powered Light Duty Trucks Under 8500 LB GVW (Including Saturn)

--------------------------------------------------------------------------------
This bulletin is being revised to update the warranty information on vehicles and add model years. Please discard Corporate Bulletin Number 01-06-01-011E (Section 06 -- Engine/Propulsion System).
--------------------------------------------------------------------------------

All engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons and piston rings. When a piston moves down its cylinder, a thin film of oil is left on the cylinder wall. During the power stroke, part of this oil layer is consumed in the combustion process. As a result, varying rates of oil consumption are accepted as normal in all engines.

Oil Consumption
The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946 liter (1 qt) in 3200 km (2000 mi).

Important: This rate only applies to personal use vehicles, under warranty, that are driven in a non-aggressive manner and maintained in accordance with the appropriate maintenance schedule, with less than 58,000 km (36,000 mi), or driven at legal speeds in an unloaded (for trucks) condition

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oil consumption

Postby Machster69 » Jun 20 2012, 1:14am

Lol sure they do... Hard to explain it other than to say... Thats normal lol!
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Re: oil consumption

Postby Z15 » Jun 20 2012, 1:29am

Yuuuuuuup This is nothing new. Here is the same bulletin dated 2003

Engine - Oil Consumption Information
Bulletin No.: 01-06-01-011A
Date: July 22, 2003
INFORMATION
Subject:
Information on Engine Oil Consumption Guidelines

Models:
All 1996-2004 Passenger Cars and Gasoline Powered Light Duty Trucks Under 8500 LB
GVW except Chevrolet Corvette

Supercede:
This bulletin is being revised to update the Model Years. Please discard Corporate
Bulletin Number 01-06-01-011 (Section 6 - Engine).

All engines require oil to lubricate and protect the load bearing and internal moving parts
from wear including cylinder walls, pistons and piston rings. When a piston moves down
its cylinder, a thin film of oil is left on the cylinder wall. During the power stroke, part of
this oil layer is consumed in the combustion process. As a result, varying rates of oil
consumption are accepted as normal in all engines.

Oil Consumption
The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946
liter (1 qt) in 3200 km (2000 mi). This rate only applies to personal use vehicles, under
warranty, maintained in accordance with the appropriate maintenance schedule, with less
than 58,000 km (36,000 mi), or 80,450 km (50,000 mi) for Cadillac, driven at legal
speeds in an unloaded (for trucks) condition.
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oil consumption

Postby Machster69 » Jun 20 2012, 1:40am

Nice! All my trucks(gms) have used alittle... Nothing excessive however!
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Re: oil consumption

Postby Z15 » Jun 20 2012, 1:43am

Car manufacturers set the bar low so they don't have to repair/replace as many engines under warranty, This may sound like sales pitch but I have seen oil consumption decrease by changing brands of oil. The volatility effect, oil will evaporate from the the heat of the engine and APR sets the allowable limit at 15% and most oil are made to just get in under that limit. Costs more to lower the volatility.
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oil consumption

Postby Machster69 » Jun 20 2012, 1:50am

Makes sense...im already a customer ;)
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Re: oil consumption

Postby Z15 » Jun 20 2012, 1:53am

Just as a example of oil volatility, look at the compariions of these 3 oils.

Test Results for 5W-30 Motor Oils
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