Car is 03 with 42k, should I change coolant? I know P coolant is lifetime, thats what manual says, but should I worry about it and change it? I dont track my car.

 

I would change it just for peace of mind but agree it probably doesn't really need changing. Mine has 13k and has been changed once and I'm going to do it again next spring.

 

I changed mine when I got the car and then found out it needed a radiator anyway

dohhhhhhhhhhhhhhhhhhhh

 

I dont wanna flush it. Any diy ?

 

You should change it every 500 miles or 3 times a year, whichever is sooner. Not. ;-)

 

Just wait for one of your coolant lines to pop off and fill with fresh. That's what happened to my car, it drained itself haha. Curious to hear the real answer though...

 

I suggest to replace out the coolant when the water pump is changed out.
Many people recommend changing out the water pump with plastic blades at around 50,000 miles to be pro-active. Several months ago I replaced my 13 year old water pump and coolant. The old water pump did look fine, however.

 

I just pulled 13 year old WP with 58K miles, it had plastic blades and half of one blade was broken off somehow. Perhaps it cavitated and got eaten off, but seal was weak and pump would rotate for a while if spun up with finger.

 

I've read up on the Audi water pumps and the consensus is that the new plastic blades are upgraded and will not break as did on older pumps= but of course this could be argued for ever and not trying to start that lol..

 

This inquiry hits home. My 2004 Audi S/4 has 75K ...before I inquired on Audi boards and a long time Porsche friend. Both sources mentioned that " life time " is suggested so it looks as though overall cost of ownership is less. Like the " 15/20 k " oil changes with regular dyno oil of the past recommended by Audi of the time ( the engines looked really messed up by 20k)). I've since changed the coolant twice. FYI, the coolant also lubs the water pump seals too. So like the old oil saying...pay now or pay later..in our case it will cost more. Depending on your view, some might simply look the other way......

 

If your water pump fails like mine did you won't have any much coolant left by the time the repaid is made, and so a flesh supply is needed.

 

I just had one of my Master Tech friends -Stan Reed @ Newport Porsche pressure flush my 03 car.
He noted a few things on my 6400 mile garage queen ( soon to be driven )- the coolant came out clear...when in fact the usual color is pink.
So for those of you that believe the coolant is " life time", I have beach property an mile outside of Vegas for you.
Also, he mentioned that it's hard to get all the air pockets out...thus the pressure flush.
This is only my .02cents and others might / will have other opinions....a fact of life.

 

"lifetime" isn't even lifetime for some lol. so why should coolant be any different!? fluids are there to cool/lubricate, and whatever else they do. therefore they need changing. all one needs remember is porsche literature says that gear oil should be changed at 90,000 miles.

what more of a confidence builder in their service interval schedule could one possibly need?

 

the trick to that is to keep the cars revs at just below or at 3k while adding coolant. don't ask me why, but it works.

 

I'm thinking of just sucking out whats in the reservoir and re filling with fresh coolant. I did this on an 01' S class I picked up a few months ago and seems to be the only option if you don't want to flush the system.