Hey, WTH.. pull the engine and polish the cylinder fins so air can pass through with less turbulance! Lexol the SP wires! Simichrome the case!

;)

My car leaks so much oil, it kinda changes itself! :p

OK, seriously, 5k or once a year (not necessarily whichever comes first). More like once a year...

Every 5000 in the Audi and Mini. Both are high revving 4 bangers. 911 gets it once a year before storage but, I use regular oil in that.
That will be lucky to see two thousand this year.

I'll take your used plugs and oil when you're done.... ;)

I guess it all depends where you live at, in my side of the world(Puerto Rico),there is a lot of humidity,so if you let the car standing still for weeks at a time,then you need to change it at least every 3000 miles, in my case I use a better oil(IMHO) that is Royal Purple,cheers,Antonio.

3 or 4 times a week.


Oh, you mean on my car.


Every 5K or after every race.

plugs
 

Messing around with the spark plugs too much may ruin the thread in the cylinder heads.Then the fun begins!