Royal Purple1040 06040-6PK API-Licensed Heavy Duty SAE 40 High Performance Synthetic Motor Oil - 1 qt. (Case of 6)

Seller is awesome and quick to respond . Product came exactly as described and we love this oil to run in our dirtbikes

I haven't done any analysis on any of this used oil because it's used solely in my mower. In my part of the country, my Hustler mower takes strait 40 weight oil. Most of this oil you find at the auto parts store or hardware store is non synthetic in this weight.Amazon is the only place I could find that carried it, it was delivered faster than the two week estimate that advance auto gave me. I am rating this product five stars on the basis that I know how this brand has performed in my truck, where I have had an analysis ran three separate times on used oil after a change.It's possible that I am favoring this oil simply because I know that synthetic is almost always better in a newer small engine, but I think my mower starts up smoother with this oil verses non synthetic brands.I will always recommend this oil to a friend.

Use for a sport car

Works great as far as oil can go

worked good for my mower

As advertised!

Just what we needed.

The Royal Purple 01040 Heavy Duty SAE 40 High Performance Synthetic Motor Oil is rated better than the 30 weight HD oil I have been using in my TroyBilt tractor with an air cooled six horsepower motor without electric starter