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That penrite sounds rather good. Nothing wrong with synthetics at all. Only downside is if the sump is sludged up a decent modern oil may get the cud moving. Saying that, a decent dino oil would do the same.
(Mr B, think postage would be expensive to NZ!)

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I use the Penrite 20/60 ("Extra 10") mineral oil. Excellent quality. Not particularly expensive. High zinc/phosphor additive content, which is good.

Synth is, without doubt, better oil that has improved cooling, anti-sludge and dirt-suspension properties. It doesn't break down gradually, as dino oil does. But it is also more slippery and will leak out of your old-fashioned gaskets much more easily.


'77 Triumph Stag MkII TV8 Pimento

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