[rmurph]

Thanks guys. Confirmed my thoughts as well. I too would like to hear about your product LubeMaster. I use Mobil 1 0-40 W in the 02 Boxster and 20-50W Valvoline VR1 Racing in the 87 Carrera. Boxster gets changed every 6 mo or 5K and Carrerra every 3K or 6 mo. Have stayed away from synthetic on Carrera due to leak stories. No leaks now and I don't wish for any. Carrera has 61,600 on clock. Thanks for the input.