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37K on 2012 5.3L GMC Sierra

Bad Bowtie2

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Bad Bowtie2 Enthusiast

Bad Bowtie2

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Never a big Mobil1 guy but then again my world has always been Valvolene products... I would think that any issue you have internally would not be subject to Mobil1 but more so toward the Seafoam in every tank. I can see a can once or twice a year for the injector cleaning but not every tank.

 

I only add Seafoam to a gas tank during my 6K oil change(s). Not everytime I get gas! :happysad:

 

So a can of Seafoam goes in 2 times a year...

chupe442 Enthusiast

chupe442

Posted
Posted

 

I only add Seafoam to a gas tank during my 6K oil change(s). Not everytime I get gas! :happysad:

 

So a can of Seafoam goes in 2 times a year...

Ahhh,,, Scratch my previous thought... But on that same thought, what is Seafoam for? With a properly maintained, non high mileage, non abuse engine, why use it at all? Just asking..

 

I still think it would be the culprit but my days of tearing engines down are way past me... With all the different detergents and additives in gas these days it could be that as well... I stand by my words of get a tune and get that AFM taken out!

  • 2 weeks later...
Bad Bowtie2 Enthusiast

Bad Bowtie2

Posted
  • Author
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Today's fuels are simply JUNK!

 

SeaFoam keeps any and all deposits down, off valves, keeps carbon from building on top of pistons/rings, etc...

Colossus Senior Enthusiast

Colossus

Posted
Posted

Today's fuels are simply JUNK!

 

SeaFoam keeps any and all deposits down, off valves, keeps carbon from building on top of pistons/rings, etc..

They are, huh? I strongly disagree. if anything the top tier fuels are better then they ever have been. The refining methods and detergents used to keep the fuel systems clean has only improved over the years.

2017SierraSLT Senior Enthusiast

2017SierraSLT

Posted
Posted

With the direct injected engines, the best fuel and oil will be necessary to keep the intake valves from carboning up. A catch can is also a wise investment.

Nanotech Environmental Enthusiast

Nanotech Environmental

Posted
Posted

Like others have posted, I can't see that Mobil 1 would be the problem here. Deactivated cylinders will likely cause oil usage due to the rings not being pressurized on the power stroke.

 

I've used Mobil 1 full syn. for many years & on my truck since new, because it has always placed among the top oils in wear tests. Now 240,000km (150,000 miles) on my 06 & still going good; little to no oil usage between changes & oil only gets changed when the monitor says so, which is usually at 12-14,000km......

Cowpie Senior Enthusiast

Cowpie

Posted
Posted

The oil is not the problem. The AFM and the oil that goes thru the PCV line are. It is just that simple. I have had the AFM disabled on my 2013 5.3L since 240 miles on the odometer. I have had a PCV oil catch can on since 1190 miles on the odometer. Engine, since I drained the factory fill at 1190 miles, has gotten Schaeffer 9000 5w30 synthetic. I only use about 1/4 qt of oil in time it takes to get the OLM down to 10%, or roughly 7500 miles. And of that, all but 2 oz ends up in the PCV oil catch can. So the engine is only "using" about 2 oz of oil in 7500 miles.

 

The Schaeffer oil I use claims dexos1 spec, but is not on the "approved" list. That it is not on the approved list really never concerned me. I run oil sample analysis on my commercial stuff, and decided that the pickup needed to get one just to see how the oil is holding up. When it gets down to under 10% on the OLM, I will change the oil and send in a sample. Will post the results on the forum when they come back.

 

Mobil 1, Pennz Ultra and Platinum, Amsoil, and the list goes on, are all fine oils. They can't be blamed for what the nincompoops in Detroit decided to do to a perfectly fine motor. And don't go blaming fuel either, or ethanol. That is a red herring thrown up because of some folk's bias. The fuels are fine, just like the oils.

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