From the February '06 issues of Honda and Acura Service News, Honda's
official newsletters to Honda and Acura dealers:
Flush Systems: A Big Taboo
In Honda/Acura vehicles, the transmission, as well as the systems that
handle lubrication, cooling, fuel, and power steering, are designed to give
thousands of miles of trouble-free service if you follow the maintenance
schedule to the letter.
Flush systems are a popular aftermarket offering these days. These products
look impressive and make lots of claims, but American Honda strongly
recommends you avoid using them on any Honda/Acura vehicle. Here’s why:
* The maintenance schedule neither requires nor approves of aftermarket
Flush systems take time to do; this adds to your service client’s wait
* Flush systems haven’t demonstrated an improvement in vehicle performance
Flush systems using solvents may leave solvent in the system you’re
flushing. This will dilute the fluid or lubricant and degrade its
* Flush systems using filters can filter out vital additives and degrade
the fluid’s or lubricant’s performance. This is particularly true for
Any damage caused by flush systems isn’t covered by warranty.
The Unofficial Honda/Acura FAQ
Click to see the full signature.