doctor fuse wrote:I've been using the 10W-30 diesel motor oil for my VW Jetta TDI for the past year, in my TD160. I mean, they are both German, and both have the initials "TD", so it must be OK, jah?
Motor oil is a very bad idea for a couple of reasons, first it has an additive that holds solids in suspension so that the car oil filter can filter them out. In a closed bearing with no filter you dont want this it is far better any solids settle out to reduce wear.
Second car oils have emulsifying agents which attract water. In an open bearing like a turntable bearing this again is not good you end up with much water in the oil at the top of the bearing and pitting of the bearing shaft results.
Here is a pic of a spindle after the rust was cleaned up and the white gloopy engine oil was removed.