the flyin' scotsman

Since owning the 928 I've used the VW/Audi 'blue' antifreeze which as well as being expensive is not long life?

Given that most modern antifreeze is aluminium engine compatible and long life can the 20 YO engine/coolant components tolerate the newer fluid?

SeanR

I use the orange stuff, and still change it every couple of years. For some reason I'm adverse to green but that's just me.

Lizard928

It doesnt matter if it is long life or not, it should be changed every year or two.

the flyin' scotsman

ok..........if we ignore the longlife is 'modern' aluminium compatible a/f suitable?

I assume todays fluids are superior to what was available 20 years ago.............hate to assume though

blown 87

It is all long life, and all of it has a life time of 2 years or less.
I use what ever the manufacture recommends as long as that is what is in the car to start with.

On mine that had everything cleaned, new hoses, vatted block, ect, after getting it running I out in G05.

Not a fan of Dexcool though.

the flyin' scotsman

Intersting comments..........my Chev Duramax 6.6l diesel has a 5yr a/f change rate.

Are modern engines/coolant systems that much better?

I personally dont care about the longlife when it comes to the 928 only that modern a/f is truly compatible.

Lizard928

Even if the newer systems were rated at 10 years, I would still change them at 2 or less.

If you see all the threads of guys who have had the heads off their S4s and you see the pitting that then has to be filled with weld and machined. I believe that this is caused from a lack of coolant changes. Another reason why I dislike low mileage cars.

SeanR

If the coolant and engine are run on a constant basis then more than a couple of years would not be a problem. The biggest issue I see on some of the low mile cars are they sit, the coolant sits, things start leaking and eating.

More than one car has had the head gaskets redone and the last one I did only had 22k on the odo and about 8 years of storage. I'm sure it will all work for what we are doing, the cars are run and used.

oups59

I am using the BMW coolant (blue) and I change it every two years.

Marine Blue

Cars that sit suffer in very few ways IMHO. Specifically areas like the A/C and engine gaskets will have issues but not much else if proper care is taken.

Any good owner will continue the standard fluid changes regardless of miles and useage. My GT doesn't see to many miles but I still flush the brakes/coolant every 2 years and the oil every year.

WallyP

Afshin,

We all hope for Prior Owners like you - unfortunately, we rarely get them.