My old clonker takes mineral oil, but...

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nobber

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are all oils heading towards part synthetic these days? Im struggling to find any mineral oil, anything synthetic just runs out of every gasket on the engine.
 
I use Halford classic 20/50 in my series cos it don't stay in the engine long enough to do any harm, but I wouldn't put it in anything modern.

Col
 
I use
upload_2019-1-27_11-55-57.png

Been fine for the last 12 years
 
Its a Turbo Diesel so not all oils work in it, that halfords stuff you could just as easily pour tea into the engine. Halfords did do a mineral oil for a Turbo diesel but they stopped and now do a part synthetic instead, Castrol GTX from what I can gather has gone synthetic, in fact quite a few of the well known brands have all gone synthetic, thats why I thought maybe it was being phased out. Comma still do it, Amazon product
 
Nothing wrong with the tractor oil I linked in the first reply. SUTO is fine too in the correct grade
 
Most motorcycles run a wet clutch, the non friction stuff in car engine oil makes a bike clutch slip


I should really know that as I ran bikes for years, but always ran them on the works oil which was either 10/40 or 15/40!
 
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