DIY for the first time
Ok, first of all, thank you very much for the starting this topic, it is extremely helpful
Mine: 2014 Mazda CX-9 43K miles , this is our second cx-9. First one was 2008 CX-9, which was totaled by some reckless dude.
Now, For the first time I was doing this job and it was really messy, even I was using the same electric pump shown in the first post. I ended up using entire bottle of RP - a lesson learned
1. The oil came out about 1/3 of qt, and it was not really relly bad (maybe Mazda updated PTU fluid in 2014 and up models. Must to say I have not refreshed the fluid before). It was kind of dark brown, but definitely not sludge and not black and gooey. See the pic
2. The oil definitely has clear burnt smell but not bad
3. Pumping out the oil was not a problem, the electric pump worked like a champ, but putting in was a huge issue.
4. When I was putting in oil, I was using a manual pump with wide (bigger) in and out hoses and it was a mistake. the wide hose makes spilling all over the place as it's not design for putting such small amount of oil.
So I shifted the out hose of the pump to a small one and ended up blowing off it from the pump several time. Apparently, you need to hold the pump and the hose by one hand in order keep in place.
Basically, technique when wide hose inserted into the pump and a small hose out of pump works the best for me, just maintain the pressure and do not rush
IMPORTANT. Based on my experience with motor oils, Royal Purple is average and some time sucky oil. Also reading a tone of threads, I can see people complain it becomes black after 5 thousand or less miles. Which means it's not suitable for the application. Gear Oil should not be that black and gooey after such small amount of miles
Furthermore It was giving me nausea because of the smell of the new oil, just my personal thing.
Because all these factors I will try next time AMSOIL. Additionally, I read somebody was using Some Motorcycle's Heavy Duty oil in his Ford Edge, it's another option.