DEF warning and engine light

[RickLB]

Tuesday the DEF warning light came on and said I had 64 miles to reduce speed of 50 would be engaged. Took it dealer and the DEF injector had to be replaced. I’ve been using truck stop DEF at the pump. Truck has 76,432 miles on it.
Is there any fluids I can put in with the DEF to help prevent the build up?

 

[donmatteo]

hot shot def additive. I swear by that stuff

 

[The Evil Twin]

As I’ve said elsewhere, the only problems I’ve ever had with a DEF system was after using a pump. While I hate the boxes, I’ve never had a problem using SuperTech or Tractor Supply cat piss.
There are additives. But never needed to use them.

 

[RickLB]

As I’ve said elsewhere, the only problems I’ve ever had with a DEF system was after using a pump. While I hate the boxes, I’ve never had a problem using SuperTech or Tractor Supply cat piss.
There are additives. But never needed to use them.

Guess I’ll be changing on your recommendation

 

[The Evil Twin]

Guess I’ll be changing on your recommendation

It could be just bad luck on my part. Two different stations though. It was frustrating AF.

 

[donmatteo]

Pump def is sketchy at best for sure.

 

[RickLB]

Never had issues to now

 

[Hunterman]

I’ve used pump DEF for years and 100s of thousands of miles. Never had an issue

 

[PlumasTremor]

These stories are why I only use BlueDEF Platinum, along with Hot Shots DEF additive as extra insurance. Using the extra HS additive is purely subjective, but I'm totally sold on Platinum DEF... place a tablespoon of regular DEF next to Platinum and watch what's left when they dry. There's a difference in residual crystallization. At some point I might try Hot Shots Premium DEF.