Lubrication specialist.....I know what your thinking...and yes, there is a Caterpillar part number for KY....
I do oil analysis and match industrial lubricants to applications. We consumed some 2 Mil litres of oil last year alone.
I was a marine engineer but not much water is liquid at 18000 feet in the Tein Shan mountains, certainly not enough for a boat, so had to find other work. Well something like that.
Bookmarks