I use 10W30 Mobil 1 synthetic motor oil and Red Line MT-90 [75W90 GL-4] synthetic tranny oil in my HX. I don't mind spending $4.00 and $8.00 a quart [respectively] 'cause I want the best. Having said that, I think it's laughable that Honda Corp recommends lightweight oils in their state-side rides.
Sure, I've used 5W30 Mobil 1 and Red Line MTL in snow country [and recommended them under THOSE conditions], but in retrospect, I believe using 'light' oil generally has nothing to do with anything 'practical' and everything to do with Honda Corp being able to boast about building "green" vehicles; cars that easily exceed American CAFE laws. Using water-thin oil helps them in this effort...
Want proof???
Here's what Honda offers the Americans; piss-poor R&D tested API SG/SH oils:
Now, look at the oils Honda Corp recommends for the rest of the world; R&D developed 20W50 API SJ oil and MTF Plus:
I think this sucks!!!
Sure, I've used 5W30 Mobil 1 and Red Line MTL in snow country [and recommended them under THOSE conditions], but in retrospect, I believe using 'light' oil generally has nothing to do with anything 'practical' and everything to do with Honda Corp being able to boast about building "green" vehicles; cars that easily exceed American CAFE laws. Using water-thin oil helps them in this effort...
Want proof???
Here's what Honda offers the Americans; piss-poor R&D tested API SG/SH oils:
Now, look at the oils Honda Corp recommends for the rest of the world; R&D developed 20W50 API SJ oil and MTF Plus:
I think this sucks!!!