Mr.Outback 1 Posted February 17 My detailer today told me he uses ONR as a windshield washer additive as he's found the usual methanol/silicon additives in most washer fluids are destructive to wiper blades and also introduce buildup and streaking. He also claimed ONR would act as an antifreezing agent. I live in a winter climate where temps can go down to 0 degrees on some occasions. Windshield fluid protection is critical. Will ONR provide any antifreeze properties to windshield washer water? And if so, what dilution ratio is recommended ? Share this post Link to post Share on other sites
Ron@Optimum 221 Posted February 17 Your detailer is correct that ONR is an excellent windshield fluid additive, but wrong in suggesting it's an anti-freezing agent. I add a cap full of ONR to my reservoir (there is no "suggested ratio") and then fill with traditional washer fluid. I don't know about washer fluids destroying wiper blades (seems counter intuitive to me) but I believe ONR will reduce smearing/streaking. Share this post Link to post Share on other sites
Lowejackson 53 Posted February 18 I will echo Ron's view, use a dedicated windscreen wash and use ONR as a booster. No idea if washer fluids will damage wiper blades but suspect even if they do, UV and abrasion will have a far bigger impact. When things get warmer, would suggest getting a glass coating. Clear glass is such a critical safety feature and a good coating can make a big difference. Share this post Link to post Share on other sites
Detail Mutant 20 Posted February 18 Based upon my experience using a rinseless/waterless wash from another company(Ultima) than contains silicon, it significantly increased wiper chatter which increases abrasion on the wiper blades. Seems counter-intuitive as to what silicon is marketed for but this is what I observed. Made sure to never use that product again especially on the windshield. Share this post Link to post Share on other sites
Mr.Outback 1 Posted February 18 The "chattering" from silicon windshield fluid additives is, I suspect, due to a somewhat obscure engineering fact : for bearings, similar materials guarantee friction and galling due to molecular attraction, while dissimilar materials (one hard, one soft) have less attraction/ friction. Alcohol in any form may be hard on wipers but unfortunately seems the only additive fluid makers use to prevent fluid freezup (fyi I usually use small amount of propylene glycol deicier to clean wiper blades (Prestone makes one such product)). Share this post Link to post Share on other sites
Mr.Outback 1 Posted February 19 On 2/17/2021 at 4:05 PM, Lowejackson said: I will echo Ron's view, use a dedicated windscreen wash and use ONR as a booster. No idea if washer fluids will damage wiper blades but suspect even if they do, UV and abrasion will have a far bigger impact. When things get warmer, would suggest getting a glass coating. Clear glass is such a critical safety feature and a good coating can make a big difference. Actually my windshield's been coated twice. First by car's dealer with Crystal Fusion 2-parter which quickly stopped working and turned glass to sandpaper, and second by my local Opti-Coat detailer who applied Glassparency 2-parter which has been working much better. ONR's now in washer fluid. Share this post Link to post Share on other sites