I was told by my indy that it is better to drain the oil because some dirty oil could still be left over by vacuuming it out. Does this detour anyone from the vacuum method? How much old oil do you think could be left behind? Are you all getting out the exact amount that you put in? Also, he said he likes to take off the armor so that he can check for leaks and such while the truck is raised up.
I'm still under warranty and I really don't want to give them an excuse to deny me for any reason so I think I'm going to stick with the Castroil which he sold me for $11 a quart.
I'm still under warranty and I really don't want to give them an excuse to deny me for any reason so I think I'm going to stick with the Castroil which he sold me for $11 a quart.