I've been using Valvoline Max Life in my 2002 Chevrolet 5.3 Vortec engine since buying it from the previous owner. I bought it around 75,000 miles and that's all he ran in it. I'm not over 300,000 miles on the odometer, original engine by the way, 2nd transmission. The tranny went 3k miles ago and was rebuilt completely with a new torque converter to all new internals.
Long story short, I run a commercial business and use Mobile 1 in all my commercial engines. I buy the Mobile 1 in gallons from Walmart for $26.00 and found it was more convenient to have the same oil around all the time. So this past switch I switched over to Mobile 1 and the truck idles smoother, has much better acceleration, and better throttle response. (Same weight as Valvoline.) Can anyone explain this difference?
Another question I have, my father had several bottles of Marvel Mystery oil when I went up to their house. He gave me one and I decided to run it in the truck and few of the commercial engines. I applied it following the directions; however this is the issue I ran into...
Before changing the oil; my "Service Engine" light came on which usually tells me to inspect the oil. This oil change only had 2,100 miles on the oil change with the Marvel Mystery Oil addition. I checked the oil level, all was good. Being the maintenance freak that I am on all my equipment, I decided to go ahead and do the change to see what it looked like considering I had 5 gallons of Mobile 1 and a stock of Wix Filters on the shelf. Draining the oil, I immediately notice the oil is BLACK. Anyway, I change the oil/filter, reset the light, and the light is off to stay. Anyone have an idea if it was the MM or what would caused my oil to be black so sudden? I always do 3k oil changes needed or not, the oil is usually visibly dark golden when drained.
Long story short, I run a commercial business and use Mobile 1 in all my commercial engines. I buy the Mobile 1 in gallons from Walmart for $26.00 and found it was more convenient to have the same oil around all the time. So this past switch I switched over to Mobile 1 and the truck idles smoother, has much better acceleration, and better throttle response. (Same weight as Valvoline.) Can anyone explain this difference?
Another question I have, my father had several bottles of Marvel Mystery oil when I went up to their house. He gave me one and I decided to run it in the truck and few of the commercial engines. I applied it following the directions; however this is the issue I ran into...
Before changing the oil; my "Service Engine" light came on which usually tells me to inspect the oil. This oil change only had 2,100 miles on the oil change with the Marvel Mystery Oil addition. I checked the oil level, all was good. Being the maintenance freak that I am on all my equipment, I decided to go ahead and do the change to see what it looked like considering I had 5 gallons of Mobile 1 and a stock of Wix Filters on the shelf. Draining the oil, I immediately notice the oil is BLACK. Anyway, I change the oil/filter, reset the light, and the light is off to stay. Anyone have an idea if it was the MM or what would caused my oil to be black so sudden? I always do 3k oil changes needed or not, the oil is usually visibly dark golden when drained.