I was wondering for a dedicated autox & track car, how often do you change the fluids or wait until you feel something odd? Thanks
- Engine
- Brake
- Transmission
- Differential
- Coolant
- Power steering

 

Wouldn't it be too late to wait til you feel something "odd"?

engine - after 2 -3 events (i dont go as often as I like to)
diff - once a yr
brake - visual

PS, tranny are still oem.........

coolant - changed when i installed my ppe like 2yrs ago, prior to that was when i installed a bigger rad.

 

- Engine: After every event, if its a full weekend I do not change between days
- Brake: After every 3-5 events or so, if it boils over, instantly, but I usually do not have that issue with my setup
- Trans: Annually
- Diff: Annually
- Coolant: every couple years, I still run anti-freeze since I am not yet a comp racer
- PS: Annually unless it boils over

My car is running in HPDE4, specs here: http://www.kohlercreated.com/blog/?page_id=27089

 

is it necessary to change the engine oil that often? i did 4/5 track days with Motul.

 

No autocross, only track days

- Engine - Changed after 2 events
- Brake - Flushed twice a year (after every 3-4 events)
- Transmission - Once year
- Differential - Once year
- Coolant - Never have
- Power steering - Never have

 

It is cheap insurance for me to change it as I only do 1 track weekend every month or sometimes every other month. However I do not use expensive engine oil. I have always used Castrol GTX so an oil change is all of $35.

 

Autocross vehicle, driven to and from events:

- Engine: Every 3 months/3rd event. (Usually ends up being 400-800 total miles between changes)

- Brake: I try to flush it twice a year, but I have spent more time in other people's cars than my own this year, so a full year this time.

- Transmission: Once a year

- Differential: Once a year

- Coolant: Every other year

- Power steering: I was "changing" the fluid in the reservoir after each event but I have really been slacking on this lately. Probably only 3 times this year. (May get it flushed this weekend)

 

- Engine - Changed after 2-3 single day events
- Brake - With every set of brake pads plus once in between
- Transmission - 1-2/year
- Differential - Every few events (Wavetrac and NISMO diffs)
- Coolant - Not part of my standard
- Power steering - Never have

ADDING:
- Clutch fluid - change to DOT 4, insulate the line, and flush regularly (every event!)