I will be turning 500 miles soon on my stock rebuilt 72 340 engine. I want to do my first oil change. The guy who built my car suggested Mobil 1, would 10w-30 best the right weight?


2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.