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Tag on my new engine.

Synthetic oil recommended below 32 degrees F.
Change oil after first 5 hours, every 50 hours thereafter.

and "DO NOT OVERFILL"

My take. It's a no brainer to use synthetic oil in winter.

They claim it's 20 oz oil capacity, yet on my old engine after a complete empty and re-fill with 20 oz. it was over fill mark. Easier to fill from top thru dipstick hole, then thru bottom oil fill where they claim to fill to overflow. Read another gent had same problem and he put 16oz in. Did the same and gets it between full/add. Added a touch more 1/2 oz-? to get a little higher but below the Full mark.

Why they give a wrong oil capacity is a loss to me.
 

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for the break in time the first 5 hours. use non synthetic stuff. so the rings can seat. if it says 20oz. that is what it is.
 

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You seem to be starting with the tag of a new engine then using that information to fill an older engine and then arguing about the dipstick conflict. I'd go with the dipstick that came with the engine's reading.

Also, especially when pouring down the dipstick tube allow time for the tube to fully clear or you will be wetting the stick before getting into the sump and looking falsely full/overfull.

All of my 4 strokes except the hardcore summertime walk behind mowers are running synthetic 5-30 all of the time. I know at least at times on some models B&S considered 5-30 synthetic a valid year round lubricant.

Pete
 

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Some engines are designed to be checked with the dipstick unscrewed which probably explains why 20oz seems like too much.
 

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Some engines are designed to be checked with the dipstick unscrewed which probably explains why 20oz seems like too much.
On my snow blower if the engine has a screw in oil fill cap then the oil level is checked without screwing the cap back in. If it's a quarter turn cap then you twist the cap tight and then remove it to check the oil level.

Whimsey
 
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