I looked EVERYWHERE and the only = place I can find 80W90 in GL-4 only is at Jiffylube in a 5 gal. pail !!!!! It = is a Pennzoil product. I can't find the Castrol around here and nobody = will order it! Anymore lube help?

PS while washing my van many flakes = of HARD undercoating came off exposing the white color on the frame and = underbody! Anyone experience this?