drakon543
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- Feb 15, 2016
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i run castrol, mobil, or sometimes valvoline always the synthetic stuff. i think the high mileage stuff may be mostly smoke and mirrors. i do occasionally run a lucas additive in my older toys tho (possibly more tricks). as with some posted lab testing it has been suggested some high mileage oils do contain more additives than thier same brand counterparts. however its also been suggested some high mileage cheaper oils are either as good as the "good stuff" or worse than the basic. so ill just stick with synthetic oils or if the extra special stuff is on sale. as far as quakerstate oils go im sure they have changed thier "recipe" however back in the day i fell victim to thier bad oil. noted tho it was common knowledge or atleast suggested common knowledge that sludge problem only occurred for those trying to push thier oil that bit extra. as with myself back when i ended up with a toast engine due to massive buildup i was regularly going beyond the original stipulated 3000 miles. however after doing seals on said engine and having the seals fail within a short span and redoing them and first hand seeing the piles of sludge. yes i went beyond 3000 but im not talking 5000 just regularly hitting 3000 then trying to budget till i could afford to do it. did the engine fail for other causes yes possible should it have had a 2 inch wall of sludge under the valve covers..... no absolutely not.