Sealed CVT
Sealed CVT
(OP)
I was just reading the the new Scion IQ has a CVT transmission that is sealed. Toyota says the owner will never need to change or add lubricant for the life of the car.
Is this common practice for CVT's?
I suppose if the fluid is exotic enough that Toyota's more concerned about someone adding the wrong fluid than running low on fluid. Still seems unacceptable to me but then I'll never buy a car with a CVT under any circumstances.
Is this common practice for CVT's?
I suppose if the fluid is exotic enough that Toyota's more concerned about someone adding the wrong fluid than running low on fluid. Still seems unacceptable to me but then I'll never buy a car with a CVT under any circumstances.
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RE: Sealed CVT
I think it reflects two things:
- Lip seals have gotten a lot more durable than in days of yore.
- The service infrastructure on the whole does more harm than good.
Mike Halloran
Pembroke Pines, FL, USA
RE: Sealed CVT
Regards
Pat
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RE: Sealed CVT
Rod
RE: Sealed CVT
There was a cost, just not a separate or itemised invoice.
So BMW are finally reacting to competition from the Japanese.
Regards
Pat
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RE: Sealed CVT
After 15 years and only a few hundred hours use my dad's Husky mower was reluctant to move forward. Some exterior dampness, but nothing I'd consider a leak. Online resources, some factory related, provided info about what oil to use ( 10W-50 SG maybe ?) and how far down from the vent surface is "full." There is no drain plug, so I just added enough to get back to the right level, and it's working better than it has in years.
Off roaders need to change their fluids after a water crossing.
Lube degrades a few different ways over time, and faster at higher temperatures. Replacement is the cure.
Mechanisms like gears and clutches and probably metallic drive belts generate debris. Lube replacement helps remove that too.
RE: Sealed CVT
Maybe oil and filter technology is to the point where the life of the fluids/filters exceeds the expected life of the rest of the car.
Still, as someone already stated, crossing water covered areas can be a problem.
I know that if a hot transmission is cooled suddenly with the breather vent underwater it will suck water in through that vent. I always wonder about that when I see fourbys with air intake snorkels being used extensively in cities.
Regards
Pat
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RE: Sealed CVT
Some manual transmissions that come in a few off road vehicles already have a small breather tube running up high...
Drive shafts on the vehicles truly designed for off road also typically come with zerk fittings on all joints so fresh grease can be pumped in after running in water..
RE: Sealed CVT
I was actually taking a swipe at pretend rather than real offroaders.
I used to take my old VW beetle past a lot of would be offroaders who stopped because they might scratch some paint off the chassis or get some water on the floor.
I know the guys who regularly drive in the wilderness know what to do.
Regards
Pat
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RE: Sealed CVT
Here we call them Tourak Tractors after a trendy fashionable suburb in Melbourne where the furthest off road they actually get is usually the car park at the Polo field.
The rougher ones are attired in fashionable RM Williams cloths with big longhorn logos and have a Blue Heeler in the tray on the back. Unfortunately the poor dog is also only really a fashion accessory.
Regards
Pat
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RE: Sealed CVT
RE: Sealed CVT
RE: Sealed CVT