Originally Posted by
Diesel_vert
Not so much the expense (cost effective 504.00/507.00 oils can be found), but more to do with using a 30-weight oil in a 10+ year old motor that's probably used a 40-weight oil all its life (speculating here).
Again, depends on the state on the engine. It'd be nice to know what's in there now, what's been used previously and whether or not it burns oil.
Going out on a limb here without knowing its service history, but if the engine is in excellent condition then a 5W-40 would be nice, or a 10W-40 if it uses a lot of oil.
As for brands, Fuchs and Liqui Moly are two stalwart German brands if you like the genuine article, but the regulars will also be fine.
Make sure that whatever oil you buy, as an absolute minimum, it meets ACEA A3. 40-weight oils are preferable. If it meets any Volkswagen oil spec 50x.xx that's a bonus but not strictly necessary I would think, at this stage of the motor's life.
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