I'm bumping this back into action because i use MC 15W40 and I always run Powerstroke Specific Lucas Oil Additive when i change the oil...just one quart. It was my understanding that the Heavy duty bottle for big rigs is forbidden in our trucks, but the full synthetic PSD is supposed to be great for ours. Any facts or oil analysis run with this stuff?
it's like $18 bottle...it's almost worth it to buy a synthetic blend for an extra $18. I was running synthetic and the PSD Lucas Oil, but i figured it was a bit overkill. Anyone else's opinion?
thanks in advance.