CASTROL GTX HIGH MILEAGE 15W-50
This is what is in mine with 55,000 miles
GTX HIGH MILEAGE 15W-50 oil provides extra protection for engines with over 100,000 kilometres. As an engine gets older gaskets become brittle, seals can deteriorate and oil can burn faster. Castrol GTX HIGH MILEAGE motor oil helps extend engine life by providing superior protection against deposit build-up