Running Mobil1 in everything. '02 Camry V6 has 140K, '93 Corona SF has 135K, both run Mobil1 5W50 as recommended by Mobil with 10K Oil & Filter changes, and I buy 20l at a time from the Mobil Distributor which works out ~$12.00 per litre. Honda motorcycle has 192K running Mobil1 Race4T with 6K oil & Filter changes. None of the engines use enough oil to register on the dipstick between changes. Best oil ever made IMO.