Excellent! Best winter wash I've used. All mfg. claims are true. The 1z tech support is fantastic if you have any questions. Will only use this from now on. And will buy it from Detailed Image-(great customer service).

works better than anyother washer fluid I have tried.

tremendous washer fluid.

At first I though it may be overpriced and that I could do with a bottle of PEAK washer fluid from the store.

I wound up buying this to test out, and diluted it 1:1. We got our first snow storm, and I wound up using the majority of my washer fluid in the week after the storm. 2 main things stick out about this product.

1- Incredible cleaning power, on one pass with the blades. It also melted the ice very quickly that was on the windshield. Great citrus scent like all 1z products.

2- ZERO Streaking. ZERO. It basically made the windshield cleaner than I could by hand after a carwash.

I know this product is superior to the PEAK store brand, because I ran out of this fluid recently, and had no choice but to buy a bottle of PEAK. Once the PEAK made its way through the washer nozzles, the citrus scent was gone, the cleaner was very ineffective, making me use twice as much. And there were a ton of streaks that would never clean up no matter how long or how much product I used.

I still think its an expensive product, But I really think that the 1z instructions underestimate this products dilution strength, and that you could probably do a lot more diluting and run into zero problems with it freezing or its strength. I would up buying more and will test it diluted 50% more than 1z recommends.