Hello,
I currently drive a 1993 Chevrolet K1500 silverado truck. I've had the truck around two years. It has a 5.7L 350 engine with about 137,000 miles. While the mileage is high the engine has always run great. Recently this summer, the oil pressure gauge reads at or below 15psi when the engine is warm, and in gear. The oil pressure returns to near 30psi or above during accelerations, or higher RPMs, yet only returns to lower readings when at stoplights, etc. While I understand the oil heats up, and becomes thinner, the oil pressure should still not become some low. If it is any concern, I changed the oil around a month ago with 10w-30 Valvoline high mileage, yet the problem was occurring before that. Any information would be great. Thank you
Pat
I currently drive a 1993 Chevrolet K1500 silverado truck. I've had the truck around two years. It has a 5.7L 350 engine with about 137,000 miles. While the mileage is high the engine has always run great. Recently this summer, the oil pressure gauge reads at or below 15psi when the engine is warm, and in gear. The oil pressure returns to near 30psi or above during accelerations, or higher RPMs, yet only returns to lower readings when at stoplights, etc. While I understand the oil heats up, and becomes thinner, the oil pressure should still not become some low. If it is any concern, I changed the oil around a month ago with 10w-30 Valvoline high mileage, yet the problem was occurring before that. Any information would be great. Thank you
Pat
Jul 8, 2007 at 9:19 PM