

The heads pick up dirt and over time the tapes shed on the play and record heads. It’s a dark brown mass that builds up. The thicker it is, the more it interferes with record/playback. Playback will sound muffled with a loss in the high end. Also, the buildup promotes the tapes shedding more doing damage over time. It usually comes off easy with a few light wipes with an alcohol dipped q-tip.
The only “trick” I’ve heard is you are supposed to only wipe off the tape head the way the tape runs across it. The idea being you don’t want to scratch the head which would then damage the tape. I don’t know if this was just folklore, but it seems logical.
I used to have a reel to reel Tascam 8 track that ran 1/2 tape in my studio. I was always careful to wipe only in the direction of the tape and I’d clean before each studio session. I never saw any build up on those heads.
I’ve always had a manual car. I love them. That is until I ended up dating a younger woman and we moved in together. Several years later the manual turned into the second car only I drove. That got sold and we now have two cars she can drive.
One day I might teach her how to drive manual. We live in a really flat area with no major hills, so it shouldn’t be a problem. One day maybe,