15W-40 instead of SAE 30 or 10W 30 for lawn and riding mowers.

[Engineer]

Generators I prefer a 5w-40 since I use them in all temps at times. I did test that ST oil if you want to know it's additives or want to do UOA. Link is in my signature.

Man, you did great with that data. Thank you very much.

 

[kschachn]

I went to Walmart and got the Super Tech full synthetic 15W-40 and changed it on my Husqvarna. It ran fine but I haven't mowed the grass yet. The sound from the exhaust is different. Seems like it has more oomph. But I will mow the grass tomorrow with it and see how it works. But my Husqvarna can use 15W-50! as per the manual. First time I have used it in the last 9 years.

Honda on the other hand... brand new and afraid to experiment. I also have a Firman suitcase generator which is spec'd for 10W 30.

Here is the oil spec for the Firman generator. I see it has 10W 40. So I guess I can use that 15W-40 on that as well?

View attachment 230280

Lol what? Are you just making stuff up as you go?

As for using a 40-grade and the silliness of oil filters being made for a specific grade, please read and understand some of the answers already given to you.

 

[Engineer]

Lol what? Are you just making stuff up as you go?

As for using a 40-grade and the silliness of oil filters being made for a specific grade, please read and understand some of the answers already given to you.

I made the leap to the 15W-40 to test as I have never used that oil before. And yes, the exhaust did sound different. Never heard of different oils and engine sound correlation. Pay attention next time.

 

[M56959]

If you post to a discussion forum and don't answer other members questions, that wastes everyone's time and won't last long.