Need to replace trans filter, how many quarts of fluid does it hold? Just purchased and I know little about Chevy's. PO states trans slips in reverse while going uphill. I experienced some shudder in 3rd (or OD) once during the 5 miles drive to my shop. It was an exciting trip, everytime the service brake was depressed, the steering wheel jerked sharply to the right, not to mention the empty rear brake fluid reservoir. Only 128K miles and the PO was the second owner, buying it in 1987. Plans for it are a dual tank heated Waste Vegetable Oil burner. Anyone with experience in burning WVO in this diesel?