injector sleeve replacement?

[Monegrand]

Can any body tell me what I should look for when deciding if the injector sleeves need to be replaced? Or is it a good idea just to replace them when ever the injectors are replaced.

[Aaron Berk]

I'm about to change out my injectors, they are sitting on my bench.

I'd be interested in knowing the answer to this question as well.

[Patrick Feeley]

Generally, they shouldn't need to be replaced unless they are cracked or scored. Cheers!

[desertdeer]

they dont fail very often. high mileage trucks that havent ran the coolant additive are the usual suspects. when i worked for the dealership i only replaced 1 set, the truck had over 350k and the coolant had never been changed accordint to the owner

[Monegrand]

Well mine look good so I won't replace at this time. What is the coolant additive you mentioned.
Thanks for your help
Andrew

[desertdeer]

its an additive that is supposed to eliminate electrolysis and cavitation. available at your dealer for a few bucks. reccomended to be added every 50k. there should be info about it in your owners manual.

[Monegrand]

Thanks, I'll look it up.

[backwoodsboy]

Fleetguard DCA60L Supplemental Coolant Additive at DieselManor
Also good to have some test strips in your toolbox. I check my SCA levels every oil change, and add as needed. Levels should read between 1.5 and 3
Here's a pretty good read on cavitation: Cavitation Article