poleclimber63
Member
bypass
I bypassed the rad, as my truck has never had the rad replaced. Lots of members have different opinions--- I do believe if you bypass the rad then one external cooler probably isn't enough if you're towing heavy loads. Probably the best idea is to install an external (the one you chose is the best, as I think it has a cold bypass internally) and not bypass the rad, but replace the rad. If you search "strawberry milkshake" you'll see why. These trucks aren't new, so if you're running the original rad, replacing it is cheap, compared to a new tranny. Some guys are of the opinion you should bypass, and use 2 coolers-- possibly with a fan with a thermo switch. The tranny fluid should be at or around 160C for normal operating temp. and running the fluid through the rad brings the fluild up to temp faster and regulates the temp. In cold climates, running externals (without internal cold bypass) may not allow the fluid to reach operating temps. under normal loads. Many have done different combinations over the years... I personally, live in a climate with hot Summers and cold Winters, so ultimately, my goal for next year, is to continue with my external and install a second cooler with a thermo switched fan (and cold bypass like the B+M)--- I plan on a long distance boating holiday, next year.
My opinion:
I bypassed the rad, as my truck has never had the rad replaced. Lots of members have different opinions--- I do believe if you bypass the rad then one external cooler probably isn't enough if you're towing heavy loads. Probably the best idea is to install an external (the one you chose is the best, as I think it has a cold bypass internally) and not bypass the rad, but replace the rad. If you search "strawberry milkshake" you'll see why. These trucks aren't new, so if you're running the original rad, replacing it is cheap, compared to a new tranny. Some guys are of the opinion you should bypass, and use 2 coolers-- possibly with a fan with a thermo switch. The tranny fluid should be at or around 160C for normal operating temp. and running the fluid through the rad brings the fluild up to temp faster and regulates the temp. In cold climates, running externals (without internal cold bypass) may not allow the fluid to reach operating temps. under normal loads. Many have done different combinations over the years... I personally, live in a climate with hot Summers and cold Winters, so ultimately, my goal for next year, is to continue with my external and install a second cooler with a thermo switched fan (and cold bypass like the B+M)--- I plan on a long distance boating holiday, next year.
