I do some heavy towing here and there. What is the best option for shearing resistance and keeping the fluid cool? Will maxlife match amsoil or redline under heavy duty conditions? I was also looking at the mag1. Great price. Thx
2004 2500hd tranny fluid choice
- Thread starter Alltherage
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Yes, Maxlife uses an advanced full synthetic base oil package and is very shear resistant. The price is really unbelievable when you find the gallons on sale.
ls1mike
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I have been using DEX 6 in my 2002 2500 HD for the past 3 years, 15,000 miles. Tow about 8000 lbs 3000 to 4000 miles a year. The 4L80E likes the DEX 6 or Dex 3.
I would use any Dex6 and just shorten your OCI.
Does yours have a factory cooler?
My best friend has an 05 powered by the 6.0l with the cooler and gauge- and he regularly tows as much as 21,000 GCVW which would be 14,000+ lbs loaded trailer (truck 6500lbs) up steep hills, out of fields and 30+ miles to the hay market. The gauge almost never moves over 150* and all he ever uses is parts store labeled Dex 3. Truck has 175k and NEVER misses a beat.
My best friend has an 05 powered by the 6.0l with the cooler and gauge- and he regularly tows as much as 21,000 GCVW which would be 14,000+ lbs loaded trailer (truck 6500lbs) up steep hills, out of fields and 30+ miles to the hay market. The gauge almost never moves over 150* and all he ever uses is parts store labeled Dex 3. Truck has 175k and NEVER misses a beat.
Originally Posted By: Doog
I would use any Dex6 and just shorten your OCI.
Sounds good.
I would use any Dex6 and just shorten your OCI.
Sounds good.
I have the cooler. I just changed the tranny oil cooler lines and it seems to get warmer than it did before. 140-150 not towing and 165-175 towing in summer. Normal temps based on my research. I have heard of full syn fluid staying cooler but who knows
ls1mike
$50 Site Donor 2024
What about long grades or big hills? Out here on the larger passes (8000 feet or 10 to 11 miles of 4 to 7 percent grade) with a large after market cooler I can see 200 to 210 for short periods of time towing close to 8000 lbs.
I grew up in Catskill. NY and the hills there are not like out here in Washington state, so I am not sure I would be a good comparison.
I know flat land towing I am right at 155 to 160.
I grew up in Catskill. NY and the hills there are not like out here in Washington state, so I am not sure I would be a good comparison.
I know flat land towing I am right at 155 to 160.
I would agree with your numbers. I'm in western ny so there are hills
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