My pressure washer has a Briggs 900 Series Intek engine. In my previous thread, I talked about needing to replace the carb due to the carb spewing gas everywhere. I changed the oil when I replaced the carb, and it definitely seemed like some gas had gotten in there, as oil spewed out of the fill hole. I had some PYB 5w-30 and some Valvoline 4 stroke 10w40 motorcycle oil (dino).
I decided to use the motorcycle oil, since motorcycle oil is built to operate in dirty, wet clutch environments. I know it's not energy conserving though, but has other additives in it that should make up for it, I am hoping.
The manual for this particular *engine* states that I can use up to 15w-50 (full syn) for temps between 20F-120F. The *pressure washer* manual says nothing of the sort, only recommends 5w-30 syn, SAE 30, and 10w-30, saying increased oil consumption will occur with 10w30, same as the engine manual. There was no mention of the 15w-50.
I almost exclusively use my pressure washer in the summer months, when temps exceed 90F. I am thinking I will be okay, however, I wanted to encourage some discussion on it.
Here are pictures of the engine manual:
Pictures of pressure washer manual:
Thoughts? Valvoline motorcycle dino 10w40 seems to have a SF/SG/SJ rating, which the manual says is okay.