QUOTE(fazleysyam @ Oct 6 2025, 12:05 PM)
Anyone have the idea about CRV RS gearbox? looking at the service maintenance table at honda website, we will have to change the HEVF Fluid + Drain Plug Washer at 150K km. based on my searching, its a honda electric vehicle fluid
is it really an oil for gear box or for motor? my SA propose to change the oil during next service 60K as she worry it might lead to some "gearbox" issue. seems like 150K is to late for gearbox oil change. shes quite surprise to know that oil will only be changed at 150K, based on her experience with HRV-RS
on the positive side, i have no issue changing the oil. at least i know the motor is being taken care of. just wonder is it really a gb or its for the motor. and what do u think about having the oil changed earlier?
Its transmission oil, not really gearbox oil. RS has not gearbox. It has what is call e-CVT (not a real CVT but one that allow layman to be familiar with the term like it is a electronic CVT gearbox which it is not in reality) that is technically built into the motor units.
From what I learn, HEVF will not only lubricate the gears and clutch within the motorized unit, it actually also lubricate and and insulate the motor windings. So technically HEVF is tied to the life of your motors, clutches and gear.
IMO, I would prefer to change it at 70k to 80K mileage. The fluids pricing is not high if you compare to the wear and tear of your e-CVT components.
For me, the weak points in terms of maintenance of eCVT is their clutches that can wear our albeit theoretically at over 300k mileage.
Why weak points is becoz from what I found out, there is no changes of clutches if it ever wear out. You got to change the entire e-CVT unit....yes, that is including the dual motors, etc that cost tens of thousand. So the fluid is important to minimize the wear of clutches as well. As fresh fluids protect longevity of your e-CVT motors, clutches and gear (yes, that single gear setup), why not change it early. 150K tends to drag that to max and that IMO, is cost saving but not really optimal if you want long life for your motors and clutches.
Note : btw, HRV-RS and City RS Hybrids is not using HeVF but using the old style ATF-DW1 auto transmission oil. Again, from what I learn, both this 1.5cc hybrids models ATF only lubricate the gear and clutches but not the motor. I guess Honda deemed 1.5cc can run without HeVF lubrication unlike Civic and CRV models that runs at higher power, hotter, etc.
So HRV and City eCVT is NOT exactly the same as their big brothers Civic and CRV eCVT units. I would term HRV and City as compact dry motors and Civic and CRV as standard size partially wet motors.
Not sure if the info is right but I am having City RS hybrid and found out they are using ATF-DW instead of HeVF thus doing some research on it to see the difference. It is a shock as I always tot Civic and CRV besides having 2 clutches and higher cc are almost the same setup as HRV and CRV e-CVT. There is more difference inside than we think. So the SA likely also don't know HRV RS uses ATF and CRV uses HeVF that are not the same in what they lubricate but I still prefer to change the fluid at 70-80k, it is not expensive and fresh fluid is always good for the clutches, gear and bearing and in CRV case, the motors. Others might differs in opinion for this.
This post has been edited by Cavino: Oct 6 2025, 03:57 PM