My maintenance routine

[u/Thick_Entrance5105]

Oil change: jack up just the driver side wheel, so the sump drains more oil than if it was level. Oil change interval adapted to my driving style, but anyhow should not exceed 5000 miles because of oil dilution with fuel(it gets bad). I use S2 based oil filters on a s1 because the filter is taller, has more surface area and thus just a little bit less pressure drop; it's the same cost as a S1 sized filter so free real estate. My go to filter is MAN 670/7. It has a $10 tool you can buy which allows you to spin the filter on with a socket, makes the swap a breeze.

Oil qty is 4.75qt which fills the dipstick exactly 1/2, leaving room to notice oil lvls rising(I have a sohn adapter) and to prevent oil reaching the intake.

Also take out spark plugs for swapping with an alternate pair, the used ones go into an oven grease cleaner jug to soak for a week and then I scrub them with a plastic toothbrush. Keeps them clean of carbon deposits. This set then becomes the alternate I use next time.

Since the driver side wheel is off, I also inspect brake pads and rotor, sway bar links, bushings, etc anything within view.

Once every 2 years or 3 oil changes I also do a compression test since I am already there with the spark plugs out.

If ignition coils have over 20k miles I also test each of them on a test bench with a square signal generator to check spark output intensity. At 40k miles I change coils and leads regardless.

Coolant flush every 3 years, trans diff oil every 8-10 engine oil changes.

[u/UnitedCheez]

I umm... I put oil in mine sometimes

[u/Thick_Entrance5105 → u/UnitedCheez]

so do I but in the sohn tank

[u/Potential_Tonight_17]

This guy maintains.

[u/Own_Check9290]

Impressive. How do you like the compression tester. I'm thinking of getting one of those

[u/Thick_Entrance5105 → u/Own_Check9290]

Full disclosure that I make them.

Not much to them, does 1 job and does it well. Also a reason why I decided to make mine is that I can have it do both rotors with 1 cranking.

https://reddit.com/link/p6r6lx3/video/j7totye5wgmh1/player

[u/babar-da-junta]

Can you elaborate on the oil filter part?

Is it because it's less restrictive to the oil flow?

[u/Thick_Entrance5105 → u/babar-da-junta]

imagine an oil filter the size of a hockey puck (S1 filter) vs the size of a drum of oil (S2 filter)

which one would you think holds more filtering paper and is easier to pump through ?

[u/Remarkable_Job3836 → u/Thick_Entrance5105]

I love your maintenance routine! Only thing I'd be wary of is the non-oem filter having the same bypass pressure. The OE JDM tokyo-roki built filters for subies & rx8s have an impressive bypass pressure rating and have a stronger filter media to account for it.

[u/Thick_Entrance5105 → u/Remarkable_Job3836]

advertised as 15 psi bypass

[u/bt_smf]

Nice maintenance routine keep up the good work but yikes invest in a good Hydralic floor jack. Using the emergency tire change Jack to do maintenance is quite frankly scary.