no conversion going on 4 years i think. it's all about the quality of the oil. i've added one of those clear glass cleanable filters inline.

there HAS to be some sort of upgrade that uses at least the same exhaust side housing as stock. i just need to know what to look for.

help please?

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped