what wt oil to use in a lawnmower

[nutz]

The new entry level mowers say no oil needs changed or checked. They are disposable and from what I see only last 4 to 5 years
We live in that era now

Ha ...are you sure it was an electric one

 

[toolmanmike]

 

[famous bob]

quickly grabbed what I saw on the shelf at the closest hardware store. 2 qts of smittys supply co, Roseland Louisiana, synthetic. (2) qts 10W-40 and 1 qt 10W-30

I have never used synthetic in a lawnmower , but muti viscosity oils have never lasted as long in any of my mowers..

 

[Dartnut]

I use what the factory recommends, no more, no less.
And I change it every year.
It's not like it costs a lot anyway...

 

[RustyRatRod]

The only reason I use synthetic is because I figure air cooled engines need all the help they can get. I differed from Royal Purple just yesterday when I serviced and repaired my zero turn. I used the O'Reilly brand 10w30 synthetic because it was on sale.

 

[4spdragtop]

I use what the factory recommends, no more, no less.
And I change it every year.
It's not like it costs a lot anyway...

Agreed, that's why I use syn equivalent. They only get changed once a year at most for me, so cost is negligible.

 

[65TerrorCuda]

How old is old? Last mower I tore down had a plastic camshaft.

 

[Ottmundr]

Depends on what you're cutting.
Weeds? Hash oil.
Corn? Corn oil.
Spaghetti or spinach? Olive oil.

All jokes aside, I doubt it really matters. You could probably get away with your used motor oil, your lawnmower will never even see 1000 miles.

 

[nutz]

I change oil every year
Lube twice a year
Do my blade after the second cut

 

[volaredon]

I have a few NOS Briggs and Tecumseh's from the 70s and 80s that have never had gas or oil in them. Enough to last the rest of my days. Those older ones is get 10-15 years each out of them easily I usually run straight 30 but if all I have on the shelf is 10-w-40 they get 10-w-40 in them. They don't seem to care.

That said just run some 80-w-90 in it and call it good

 

[nutz]

Ha had a friend that built 5hp Briggs stock go kart engines
He would go around on clean up day and pull out anything with a Briggs
Seamed like the older the better
He get those things to scream

 

[Locomotion]

Ha had a friend that built 5hp Briggs stock go kart engines
He would go around on clean up day and pull out anything with a Briggs
Seamed like the older the better
He get those things to scream

Good engines. I think JR. Dragsters started out with the 5HP versions. Now they have billet aluminum blocks, billet cranks, etc.

 

[nutz]

Good engines. I think JR. Dragsters started out with the 5HP versions. Now they have billet aluminum blocks, billet cranks, etc.

stock class running alcohol is what he did
everything was oe briggs parts ....it was funny watching him build them ....he was his own smoke machine...marlbro flow checked
he would run with the big $$ builds ...
RIP brian (cancer....who would have known) he would say a six pack and mc.meal have the same calories ....if i have a choice i'll take the six

 

[Garrett Ellison]

Valvoline VR1 SAE 30.

 

[chilsam]

I use VR50 in my J.D & B&S