mixing oil grades

Big lumps of metals and spanners.

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jpee
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mixing oil grades

Post by jpee »

Is there a problem with mixing oil grades, ie a 10/40, 15/40 and a 20/50 ?
Never sure where I'm going till i get there.

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Syncro G
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Re: mixing oil grades

Post by Syncro G »

If they are all mineral (non sinthetic) and your topping it up it'll be fine. If its for an oil change better to just put the right grade in rather than mix, not know exactly what you've got and worry - proper oil/maintinance is much cheeper than engine repair, though if its near the end of its life I'd be less bothered.
Glen Syncronaut: 113 - 1992 JX Syncro pannel van

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mrted
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Re: mixing oil grades

Post by mrted »

jpee wrote:Is there a problem with mixing oil grades, ie a 10/40, 15/40 and a 20/50 ?

It will change the viscosity (how easy the oil flows) of the oil in the sump,

and the mixture will assume the properties of the cheapest oil you used.

Best as a tempory solution


John
1982 Hi top camper (german conversion from new)

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