Engine Oil type??

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Originally Posted by Red90

You understand blue smoke is fuel and not engine oil?

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Excess fuel will be black. Blue indicates oil is being burnt.

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Originally Posted by DiscoDB

Excess fuel will be black. Blue indicates oil is being burnt.

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This has always been my thought...
I have purchased some CEM gear...

If you're in doubt about the colour of the smoke, someone behind the bus with an educated pair of nostrils could tell.

yep, 15/40 E7 would be fine for non DPF

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Originally Posted by DiscoDB

Excess fuel will be black. Blue indicates oil is being burnt.

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That is false. Black is excess but fully burnt fuel. Blue means it is partially burnt. Normally caused by retarded timing.

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Originally Posted by Red90

That is false. Black is excess but fully burnt fuel. Blue means it is partially burnt. Normally caused by retarded timing.

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Certainly worthwhile checking the timing - especially if the injector pump has been removed at any stage.

A calibrated nose would help confirm!

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Originally Posted by Red90

That is false. Black is excess but fully burnt fuel. Blue means it is partially burnt. Normally caused by retarded timing.

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An old post on AULRO:

Blue smoke from a Diesel, only under certain conditions

Symptoms on page 1, narrative following in various posts, solution on page 3.

I have a newish Deutz tractor (the last of the non electronic era) with less than 1k hours on it.

Gives a very small puff of blue (that smells of diesel) when given a squirt, doesn't use oil at all.

I'm not particularly concerned.

cheers, DL