Peace of mind mostly. I sometimes wind it out all the way to triple digits and I don’t think that 0w-20 is enough. 10w-30 HM has the 3.5 HTHS but I wanted to keep the 0w so 0w-40
Plus I’m curious to see how it does on 0w-40
For most of my driving the 0w-20 is fine
So how is the engine after 173K with a 20wt? [/quote
I’ve never had it apart. It runs fine, I think it has a fair amount of blowby when it’s cold. I can hear the PCV valve clicking.
Let’s try to keep this thread on track shall we? I didn’t ask for viscosity recommendation, I named two oils and asked how they differ.
I highly doubt your PCV valve is "clicking". That would be your injectors. Just stating facts
Not injectors. This is an intermittent relatively loud clicking or clapping kind of noise from the intake. Does it more when the engine is cold.
Maybe it’s EGR but I didn’t think that could be heard. I dunno