Godfather is a Castrol Dealer. I have to agree. But wait, actually I disagree, as we've been running the oil in all our cars (incl. the corollas, old and new) for close to 30 years, with applications going on 6 different cars (2 toyotas). No funny noises, no bad oil colour, no damage, no mystical prancing dwarf named hans, no winged monkeys with zithers playing 'Smoke on the Water' while balancing glass bananas on their tails, no nothing. It's not bad oil. I've been using Castrol GTX2 (20W50) in my 102 for a while, haven't had a single problem with it. Switched to Gulf Western on the last change though, waiting to see how that turns out as it's only half the price. If I run any thinner than 20W50 I start burning through it a bit, valve stem seals/rings seem to be slowly on the way out