Mobil1 is now producing a 0W-30 racing
oil. This stuff has 1800 PPM Phosphorous (ZDP). It is not recommended for street use (probably due to the high levels of ZDP and Moly). The stuff is very pricey but would offer great protection for those of us with flat tappet engines. I spoke with a Mobil guy at the end of the phone and he would not comment too much on the level of detergent in the product.
My question is this - is anyone out there using this product and are you having any issues with sludge?
Bob