Originally Posted By: Gary Allan
Are some of the very worst Mobil 1 too? Just asking about the rest of the "un-some". I also imagine some of the best were with SuperTech and, of course, the venerable (said like the virgin in pajamas in "Demolition Man" when saying "diner and dancing at ... Taco Bell" ) Pennzoil conventional..
Absolutely! I`ve seen terrible ones with Mobil 1, Pennzoil Conventional and Valvoline Conventional. There was a guy here who had bearing failure with Mobil 1 15W50 and then another who ran Mobil 1 15W50 for over 14,000 miles and had only around 4ppm on iron and almost no copper. The engines that have impeccable uoa`s with Mobil 1 also have them with dino,as the engines with horrible uoa`s on Mobil 1 have equally horrible uoa`s with top notch dinos. I can`t help but think the high wear metals have nothing to do with the oil,but with the particular engines.