cabin filter installation and questions about oil in the diff — logbook Toyota Mark II 1997

as in general, I was going to — in the country I changed, or rather put, the cabin filter. Of course, he wasn't there. having read Drome and Turerv, he expected terrible torments and tricks. everything turned out to be trite and I just unscrewed a dozen and a half screws and that's it - the operation took about 15 minutes, but required some gymnastic skills.

by the way, changing the filter on the YARV is also a very exciting activity, only there are fewer screws)

about the filter - of course I wanted to buy the original with a frame and then change it calmly, but it takes a long time to wait, sooooo much, and I also bought a carbon filter in the next department and for only 180 rubles.

though I had to cut it a little in the upper part, cut out a small shelf. in general, everything is elementary.

about the oil in the diff. not everything is clear. in fact, I have two differentials, one truth is in the garage. so here on one the letter S is embossed on the other D. a brief review of the above resources did not give any results. WHAT IS THIS? which one is lockable. I bought the oil for normal without blocking. again, what to put in the harbinger of winter?