Ram 1500 oil cooler system leaking after 900 adapter replacement at 69000 miles on Ram 1500

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Ram 1500 owners report experiencing oil cooler system leaks after an adapter replacement, particularly around the oil cooler/oil filter housing, which is a common issue in vehicles with a 3.6-liter engine. These leaks may necessitate the costly replacement of the oil cooler plate gasket, with repair costs averaging around $1,500. Additionally, owners emphasize the importance of using high-quality replacement parts and maintaining the oil cooler system to prevent further leaks. Some also note that draining the coolant is typically required when replacing the oil cooler, and it may be beneficial to replace the thermostat simultaneously to avoid future coolant flushes. It is recommended that owners have their oil cooler system inspected by a qualified mechanic to effectively address any leaks and prevent further complications.

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