Thanks I always used DW! in my Accord tranny and always used the Honda oem coolant too.. I would think the honda cvt fluid is syn. by now... Is it???Yes, all Honda fluids are premium fluids. However, they are not full synthetic which performs better. .
I recommend Honda fluids, but I use Amsoil CVT fluid in the HR-V transmission. Honda CVT fluid is good, but Amsoil has performed better for me.
Likewise, I only use Honda Long Life Coolant in the cooling system and I change it at 30K mile intervals.
I use Amsoil ATF in my non-CVT automatic transmissions and Amsoil Manual Synchromesh in my 5-speed manual Element transmission.. Just check the labels on the back on the non-Honda fluids to see if they meet Honda spec requirements. Honda does not include their competitors' specs on their labels..
The only Honda fluid I use in the rear differential fluid of my HR-V, Element and CR-V is Honda Dual Pump II, because no one else makes it. Depending on how much I use the AWD feature in the winter going through heavy snow, I will change it at 15K or 30K mile intervals. It is thin and can break down under heat and extreme use. You can feel and hear the difference when it begins to break down.
For the engine, I use either Mobil1 full synthetic in all of my motors but I stick with the viscosity requirements for each. My HR-V runs best on Mobil1 0W-20 AFE (Advanced Fuel Economy) which is designed especially for this engine. Mobil1 even has the Honda name on the front label for this one.
Hope this helps.