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2 minutes ago, KARNUT said:


My shop see examples of heavy towing daily. Non of my trucks were stock. 
I just stopped towing in the mid 2000s.


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Nice, I'm assuming you upgraded cooling and probably tuned? Once you tune I don't think I can ever go back to stock, lol.

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Nice, I'm assuming you upgraded cooling and probably tuned? Once you tune I don't think I can ever go back to stock, lol.

Tunes on diesel and gas. Early gas cams, intake, headers, some gear changes and gear vendors. Some electric fans when needed. Slick 50, STP, keep cool in the cooling. Later Amsoil in everything. Only engine failure was a V-10 injector seal lean out. One transmission pre 100K C-6. Amsoil change all that. Had some injector problems in 2000 models Cummins that was widespread. Cured through the aftermarket. Banks kits were a blast on diesels. By the later 2000s too busy to haul equipment, farmed that out. Only service trucks have diesels now. 2 tons with service bodies. Drive trains basically the same as 1 tons. One GM gas 6.0. All pulling hard no problems. Pretty impressed with the diesel for power. And gas too. Now retired I stay away from new trucks. If I can’t play with it I don’t want it. That way I have an old Avalanche.


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44 minutes ago, KARNUT said:


Tunes on diesel and gas. Early gas cams, intake, headers, some gear changes and gear vendors. Some electric fans when needed. Slick 50, STP, keep cool in the cooling. Later Amsoil in everything. Only engine failure was a V-10 injector seal lean out. One transmission pre 100K C-6. Amsoil change all that. Had some injector problems in 2000 models Cummins that was widespread. Cured through the aftermarket. Banks kits were a blast on diesels. By the later 2000s too busy to haul equipment, farmed that out. Only service trucks have diesels now. 2 tons with service bodies. Drive trains basically the same as 1 tons. One GM gas 6.0. All pulling hard no problems. Pretty impressed with the diesel for power. And gas too. Now retired I stay away from new trucks. If I can’t play with it I don’t want it. That way I have an old Avalanche.


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Amsoil is my choice in everything also. I usually cheap out if I don't plan on running it for a long time or I know the engine will last forever even if you piss in the oil tank. I've actually been running Mobil 1 0w-20 in this truck as everyone is showing it performs very similar to amsoil in the L83 at least. The industry is starting to catch up to Amsoil.

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On 4/8/2021 at 9:00 AM, ic3man5 said:

 

 I've actually been running Mobil 1 0w-20 in this truck as everyone is showing it performs very similar to amsoil in the L83 at least. The industry is starting to catch up to Amsoil.

i would like to see this test data showing it performs as good as amsoil... i use to run Mobile 1 in all my cars, until it began sludging up the heads and oil cap.

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Some vehicles are more prone to sludge than others.  Regardless of what oil you use.  There were a number of Toyota engines in the Camry and Corolla in the 2000-2010 range that had this issue, small oil passages were the cause from what I recall. 

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