15 Oct How to Avoid Cooling System Problems

The radiator is a critical part of the cooling system, it helps remove heat from the engine, through tubes cooled by road and fan air.

But problems can occur and lead to leaks and overheating, such as road vibration, which can cause tube-to-header leaks. An older truck that has worn components can stretch a radiator and cause it to leak.

The radiators of today are made out of plastic instead of metal and are considered a throwaway item when they start to leak. It’s easier to replace than to repair. Anytime major engine work is performed, have the radiator checked. Use proper coolant-according to manufacturers specs.

Radiators should be inspected and cleaned at least every 250,000 miles, this depends on conditions, the newer extended life coolant is rated for 600,000 miles and the only maintenance is an inhibitor at 300,000.

The old coolant requires a lot of testing for the proper mix with additives. And is also more abrasive on water pumps, than extended life coolant, because of silicates. The cost of extended life coolant is worth it in terms of maintenance and performance.

Extended life coolant is a bright red, pink, orange, rust-colored, while traditional coolant is green. If you happen to mix the two, you won’t harm the system as long as you don’t add more than 10% to one or the other. But retest the system and change the coolant out if it doesn’t meet specs.

Remember to check the DCA level often without this properly monitored you may be due for an overhaul much sooner than expected because the liners started to leak, the DCA protects the liner walls from the exploding pockets of air. With a low level, you lose your protection and a leak will be in your future.