Had my oil changed in my pickup last week at one of the local oil & lube shops. Yesterday morning (7 days later) I started my truck to go to work and it was knocking. After a few minutes it stopped. I drove into work, about 35 miles, and no more knocking.
Truck was parked all day. I left the office around 4:30, started the truck , and it was knocking loud enough to hear over the A/C, radio and Flowmaster exhaust. I started looking for a place to pull over when the knocking started to fade. After a couple of miles, it went away altogether.
To make this short, I decided to change the oil again. Maybe trash was blocking a passage and causing a lifter to drop. We started draining the oil, and it had a red tint to it. It appears the oil change shop put transmission fluid in my engine.
After the oil change and running the truck for a little bit, the lifter is no longer knocking. Started the truck this morning, runs smooth as ever. But, what damage could have been done by running transmission fluid in the engine? It was in there for approximately 450 miles, no more than 40 mile trips at a time.
Truck was parked all day. I left the office around 4:30, started the truck , and it was knocking loud enough to hear over the A/C, radio and Flowmaster exhaust. I started looking for a place to pull over when the knocking started to fade. After a couple of miles, it went away altogether.
To make this short, I decided to change the oil again. Maybe trash was blocking a passage and causing a lifter to drop. We started draining the oil, and it had a red tint to it. It appears the oil change shop put transmission fluid in my engine.
After the oil change and running the truck for a little bit, the lifter is no longer knocking. Started the truck this morning, runs smooth as ever. But, what damage could have been done by running transmission fluid in the engine? It was in there for approximately 450 miles, no more than 40 mile trips at a time.