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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
The 5-20 is fine. When you are due for your next oil change the weather will be warmer and you can switch back to 5-30. I prefer the 5-20. Thinner oil flows better and still has plenty of film strength to protect your engine. My theory on nearing life is it's better to have lots of fresh...
