Pump Conditioner and Winterizer

Image of pumpcondwint
Made to protect your pressure washer when not in use.

Product Description

The STIHL Pump Conditioner and Winterizer protects your pressure washer against freezing for safe storage in cold weather. This product comes in a 16 oz. bottle and is designed for use with all STIHL pressure washers to prevent harmful build-up of hard water mineral deposits in the pump. It also preserves seals and pistons and is great for cold weather and extended storage.

PRECAUTIONARY MEASURES: Make sure the engine switch is in the OFF position and disconnect all pressure washer hoses. Pull the rope when squeezing the conditioner and winterizer to help flush the fluid through the entire pump.


Pump Conditioner and Winterizer is rated 1.0 out of 5 by 3.
Rated 1 out of 5 by from This product sucks I am sure the fluid is good but the packaging is awful. The instructions on the bottle say to squeeze the fluid into the pump while it is connected to the water hose inlet. The threads are so bad and the plastic is so cheap the bottle just leaks everywhere and the fluid does not get into the pump. Not what I expect from a Stihl product. I am very satisfied with the pressure washer but this product needs some improvement.
Date published: 2018-11-19
Rated 1 out of 5 by from This is the worst Stihl product ever made I am a long time Stihl owner... chainsaws, weed wackers, blowers, sprayers, etc. I recently acquired one of their power washers over the summer. I read the first review and didn't believe it. I went down to my local hardware store and purchased this product. Looked simple enough, thought this was going to be a quick job... no luck. This is the worst example of product development I have ever seen. I would like to see the team of engineers that came up with this idea actually use it. I am very disappointed this product bears a name I have grown to trust. It simply doesn't work. Use this money to buy a six pack of beer, at least you will get what you expect.
Date published: 2018-11-07
Rated 1 out of 5 by from This product is bad This is the worst designed product I have ever seen from Stihl. First of all, the bottle thread is poor. It leaked a lot on on my first try and got most on the garage floor. With some teflon tape I got it to be somewhat better. Secondly, by using the instruction with a short hose, but there is now way of telling if any winterizer got through the pump. Next year I will just keep my RB400 inside.
Date published: 2018-11-01
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