Maximum Oil Viscosity?

[Captain Spalding]

Just asking to satisfy my curiosity: My engine builder advised me to use 20-50 engine oil. If the original engine was designed to run on 30 weight, why would one run a multi-viscosity oil with a viscosity higher than 30?

I know there are several lengthy threads on engine oil in which this specific question might have been answered. Forgive me for not reading them.

[Dale M.]

I uses synthetic 20-50 in a full tilt Auto-X motor because I wanted the extra assurance of keeping rotating part oiled during hard cornering where the oil pickup sometimes takes a gulp of air (less flickering of oil light) .... But in street motor (pumped 2084) I run standard 30w...

I would go with what engine builder recommends, the new oils are lot better in many way than what was recommended 40 years ago....

Dale
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[mcmscott]

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[rockurob]

[SuperSamba]

Please use:
http://www.thesamba.com/vw/forum/viewtopic.php?t=220755

If you don't want to read it as that thread is not specifically answering what you asked right away - go ask in there.

Read the last few pages first - there is a similar recent conversation.
Or this other recent thread
http://www.thesamba.com/vw/forum/viewtopic.php?t=592781