ok thanx guys i guess ill do 2 services just to be safe
Also, if you push hard or ride the brakes a lot during the track day, it would be a very good idea to give the brakes a little bleeding after the trackday. You don't have to change all the fluid, but just enough to push out the overheated fluid in the caliper.
I used Motul 8100, went to Winton and after that, the engine was running with reduced power. It was also just a k24a with a lower redline compared to a B or k20a. Changed out the oil and it came out black and thick (oil doing its job catching/cleaning carbon). So I'd still change oil after trackday and not wait for the next service interval.
I don't know what you do man...But I change my oil once every 2 Supersprints/Trackdays (Which are like a month apart) and it still comes out clean, and I run my car pretty hard + there's all that street mileage as well. Pulled the engine after a year of competition, its still very clean and healthy.
But, I've never been impressed with Motul :-p Never liked that oil, good when fresh and after a little bit, gets rough pretty early on. On my Civic, I run either Mobil 1 5w-50 or Redline 15w-50, my 2 other cars, its shell ultra 5w-40.
Wouldn't worry to much about after. Maybe take a 1000km off before your next service.
I had an old dodgy toyota 'race car', put some cheap $20 oil in at the start of the season, did 60km a night for about 8 meets over the year. Regularly overheated every session for about the first 4. Never had a drama. 3 years later someone else still owns the car and it still attends track sprints, hillclimbs and motorkhana's on a regular basis. Think it might have had one oil change since then. Oil always looked good too.
Sure not quite as high tech as a honda, but revving an 25 year old pushrod toyota engine with poorly tuned sidedraft carbs to 7500rpm is my evidence
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