Subaru now extending CVT warranty on nearly all 2019-2020 models now

[Exhaustgases]

They are NOT constant slippage, they are infinite ratio. They “slip” way less than a torque converter. As a matter of fact, the Subaru high-torque CVT has a torque converter in front of the CVT.

As a matter of fact, CVTs can be so amazing, that in F1 racing they were outlawed back in the 1993, before the only F1 car with a CVT was even allowed to race!

When the chain or belt enters and exits the highly compressed variator pulleys, there is slippage at that point as well as the up and down sliding on the taper surfaces of said pulleys, yes there is constant slippage. And why you need the proper specified fluid designed for that, they need to slip and yet grip too.

I'm not saying the chain or belt slips for the drive function, its slipping metal on metal for its normal function in certain areas of the variators.
The variators clamp nice and strong so pretty much no slippage there unless for some reason the apply pressure goes low, which it will on some Jatco units because the flow control valve wears out (psi relief valve) and causes low pressure, then its a matter of time before the belt flys apart.

If the correct things were done a CVT for a small car should last a long time. Jatco definitely had the proper finishes, heat treats, metallurgy, for the belt and variators. Its the other components that they messed up on.

 

[Revving2Redline]

Just make all cvt transmissions take either Redline cvt fluid or @High Performance Lubricants cvt fluid and make it where all can be drained and filled like a rear end. This is one of those few places where you need top end fluids that dont shear, flow at - 50 degrees and are years beyond in the high heat range. If not, then that fluid needs replaced 15k intervals and no more, engine oil @ 5k tops.