Close-up of engine components including hoses, belts, and pulley…

Just before making a quick trip from Memphis to Gainesville, FL, I noticed a small coolant leak, but I didn't have time to pinpoint the source before leaving. It was slightly low when I arrived in FL, but still not bad enough to worry with. On the way back, I popped the hood during a fillup and spotted the leak immediately. Since it was on top & so easy to get at, I changed it in the Advance parking lot in a few minutes and got lunch. I barely even needed to wash my hands afterward.
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Dayco was the OEM for coolant hoses on these trucks, so I consider this to be the best replacement (or a close 2nd, at worst).

Soon after, another pinhole appeared in the heater return hose right beside this one, but it was no more difficult to change.



I flushed the coolant & cleaned out the reservoir while changing the 2nd hose.



UPDATE: Almost 4 years later (at ~33 years old), the factory lower hose split. The upper hose is still factory.

Owner caption April 2022 · Photo 115 of 121