Brokaw

What weight synthetic oil (0W40 or 5W40) does a new GT 53 come with from the factory?

NovaOne

Not sure... the owner's manual just mentions that the GT 53 requires 229.51, 229.52, 229.61, or 229.71 oil. These are oils designed for reduced particulates emission, which I assume is because the GT 53 engine has a particulate filter like diesel engines?

Looks like 229.51 is the most popular standard in terms of availability, with Mobile 1 ESP being the go-to oil. Still don't know what the stock oil is though. You need to top off or something?

Brokaw

Thank you Nova One for your insightful response.
Brokaw