oil
Hi Chaps i am at a bit of a quandary. On my Suffolk Super Punch it says a 20-50 oil is this strictly necessary, seems a bit heavy Would a straight 30 grade be okay? Also what would the capacity be for 94 engine.
Forums
I work on the principle clean
I work on the principle clean oil changed regularly is better than dirty oil of any grade
Another way of saying, “ some oil of any grade is better than no oil at all”.
This little Suffolk engine
This little Suffolk engine was 75cc. Later 98cc
It only carries half a pint of oil so it is very important to keep it changed at about every 20 hours work & make sure it is at the top mark on the little dipstick. the oil recommended in the 1960s was a straight SAE 30 usually Castrol. With modern multi-grade oils 20-50 will be OK & possibly even better for it.
It will run OK with the piston floating about like a Pea in a Barrel, so it is a resilient little engine.
A little known fact for you; Suffolk always made their own engine castings & whenever they had cast them with a poor tolerance in the bore, these rejects were re-bored to oversize, fitted with new components & sold then as replacement, short service engines, through the Dealers Parts Departments & Atco Service Branches. (Not service exchange, there was no exchange program).
Enjoy this little mower, they made them in their millions.
I think so - older Suffolk
I think so - older Suffolk engine plates said use Shell x100 30 I recall.
Reckon the reason they put 20w 50 was by the seventies when that was new, all cars used 20w 50 and it would be easily available?
I work on the principle clean oil changed regularly is better than dirty oil of any grade