Running without service
This point is the most confusing of all because some modern cars have it in the manuals that transmissions do not require service. But they do, and here's why.
First of all, natural wear and tear of parts is inevitable. Second, all that issues we mentioned earlier do not kill transmission on the spot, in most cases they simply contribute to the wear and tear. This process can result in a range of damages, and one of them can be easily tackled. It's the accumulation of metal flakes and dust in the transmission.
Such units as engines and transmissions are designed to operate in the clean lubricated environment without any debris. When damage occurs it creates tiny pieces of shredded metal that stay inside the transmission flowing in the transmission fluid. They become a time bomb inside it. When transmission fluid is changed, it flushes out this metal dust, so it can no longer cause more damage to the parts of the transmission. But when there is no service… You get it.
You might want to ask us why manufacturers state that there is no transmission service required. We would like to know the answer too, but we don't. What we do know is how to service the transmissions and tell if there are any issues building up inside when we do that. You can always book your service appointment with us on our service page