Stock Merc. 502 MPI's run the seawater through the power steering and transmission coolers before the Cool Fuel exchanger. I'm doing some modifications to my engines and am moving the oil cooler from the front of the engine to the rear, which will put it upstream from the cool fuel system. Will the increased heat picked up from the oil cooler cause a problem?

My Gen 6 454 mag power steering pump and oil cooler is located in rear already. Only issue I had was vapor lock on HOT summer days, but merc has a plug and play kit for the fix! Adds a another fuel pump in front of the water separator. Vapor lock happened when you run for a while then turn off for a while. Evidence was fuel filter was now half full and wouldn't start till you cycled the ignition, fuel primer, till it filled back up!

OK, thanks-