how do you care for the turbo?


Asked by Feb 12, 2008 at 11:13 AM about the 2000 Audi A4 1.8T Sedan FWD

Question type: Maintenance & Repair

how long must one idle the car before turning off the ignition after driving? Also when does the turbo kick in?

10 Answers


The turbo does not need any special care as since 1986 or 88, all Audi turbos have been water-cooled, so there is no chance of harming the turbo when shutting the engine off after driving. Just read this in Popular Mechanics last night, in the newest issue. The turbo kicks in any time more power is needed by the engine.

6 of 6 people found this helpful.

The car needs to idle based upon how hard it's been driven. The reason they're telling you to idle is to let the turbo cool while still circulating oil through it. If you drive the piss out of it and then turn the car off you risk it keeping superheated oil in the turbo and gumming up the inside. Also, ALWAYS FULLY SYNTHETIC OIL. A turbo kicks in when your car is in boost. This happens when the car is under a load (going forward or backward). For a simpler explaination: stomp on the gas and find out!

2 of 2 people found this helpful.

You can get a turbo timer so the turbo can cool down after being driven hard, the turbo spins up in the 10,000 to 100,000 rpms. This way you will not have to idle it, it will idle itself.

2 of 2 people found this helpful.

Well the stock ko3 audi turbo will spin upwards of 140000 rpm under high boost. So rodding the car and shutting it down will destroy a turbo in no time. Full synthetic is not requied although it is very nice. If you drive the car normaly on flat roads 10 to 30 seconds of idle is ok. If going up a hill, highway cruising, high speeds, high rpm's, or anything else that puts a strain on the motor, let it idle for atleast a minute to three min.. My friends turbo timer sences how you drive the car and will adjust accordingly. It goes anywhere form 45 seconds all the way to 8 min!! So he can take the keys, lock the doors and the car will run for that amount of time then shut off on its own. The only bad thing is that turbo timers are expensive for a good one and if your not familliar with elictrical wiring there a pain to install.

1 of 1 people found this helpful.

i would strongly agree on installing a turbo timer. i believe that the best way to maintain the performance of a turbocharger would be to idle your car. the turbo timer allows your car to idle itself to allow proper oil circulation. the turbo timer is just the easiest way to do it....oh and it looks cool haha

2 of 2 people found this helpful.

I would agree with the first reply Audi turbo's in those cars don't need to idle even if you beat the car a bit. We are not talking about aftermarket turbo running 20 psi here guys, it's a stock Audi 1.8T.

1 of 1 people found this helpful.

i work on audi and do performace work and u dont need to let the car idle cuz the turbo is water cooled so it wouldnt seize up. also use full syn oil on turbo models tho

3 of 3 people found this helpful.

I agree too, the stock a3 1.8T (150bhp) engine does not need to be idled, maybe except when driving highway and accelerating often from 70 to 110 mph for example. Anyway, Audi doesn't state the car has to be idled, moreover you rarely stop the car immediately after you've driven on full boost. And the k03 turbo boosts to 7.25 psi (0.5 bar), so it isn't much of a deal :)

2 of 2 people found this helpful.

Stay on top of your oil changes and coolant changes. Turbo cars are always prone to head gasket issues. Most newer turbo cars have a built in timer that cools the turbo after shut down, you should not have to idle after driving. Check your owner's manual, it should state if you need to or not. The turbo kicks in with enough throttle, load, and RPM. It will vary depending on speed, load, how much your foot is into the gas, and what RPM you're at.

1 of 1 people found this helpful.

Will a 2004 audi a4 turbo fit a 2007 a3

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