Forum Discussion

maillemaker's avatar
maillemaker
Explorer
Jun 11, 2018

Can anyone tell me what this coolant line is for?

I have a 1990 Winnebago Warrior RV built on a Ford E350 van. There are, of course, two bypass lines that come off of the water pump and manifold. Normally, these would route to the heater core. O...
maillemaker's avatar
maillemaker
Explorer
Jun 13, 2018
A good rad shop would be able to reuse your original tanks and just recore the rad...


Yes, but it will likely cost $400+.

The guy in this thread thinks it’s there to warm the transmission oil too:

https://www.ford-trucks.com/forums/1512365-1993-f350-460-heater-hose-bypass.html

This one too, with a detailed explanation:

https://www.ford-trucks.com/forums/1458934-heater-hose.html#post16667195


Well, that guy sure seems to know what he's talking about.

Steve

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