My dinghy motor is a 3.5 hp Nissan two-stroke. Each year when I lay up the motor I flush the cooling system with salt away. I do not believe this product actually removes salt deposits only surface crust. Would it damage the motor if I submerge the lower end in a bucket of barnacle buster properly diluted and ran the engine to clean out any salt deposits. My concern is that most of the engine is aluminum and barnacle buster may damage that metal or the rubber impeller. Has anyone tried this? I would do this only every two or three years. Just as an attempt to keep salt buildup from clogging the passages. At present the cooling system seems fine although the first time I run the engine each season I do have to reem out the tell tale weep hole on the engine block. Richard -- Richard Packard Professor Emeritus Physics Department University of California Berkeley, CA 94720 http://physics.berkeley.edu/people/faculty/Richard-Packard 510 525 0279

Barnacle Buster- interesting idea. My Evinrude two-cycle engine, purchased 1998, has been in use since without any flushing. It runs as well today as it did when new. I'd be interested in what the dealer would say about this topic and when around a dealer, I might just ask. I do know that once I used acid on an aluminum bilge pump, the aluminum body disintegrated, but granted, I left it summerged too long in the acid, a couple of hours. *Rudy & Jill Sechez * *BRINEY BUG-a 34' Sail-Assisted Trawler * *Anchoring Consultants-trawlertrainingabc.com* *850-832-7748 * *Oriental NC Northbound-Chesapeake* On Mon, Jun 1, 2020 at 2:16 PM Richard P via Trawlers-and-Trawlering < trawlers@lists.trawlering.com> wrote: > My dinghy motor is a 3.5 hp Nissan two-stroke. Each year when I lay up the > motor I flush the cooling system with salt away. I do not believe this > product actually removes salt deposits only surface crust. Would it damage > the motor if I submerge the lower end in a bucket of barnacle buster > properly diluted and ran the engine to clean out any salt deposits. My > concern is that most of the engine is aluminum and barnacle buster may > damage that metal or the rubber impeller. Has anyone tried this? > > I would do this only every two or three years. Just as an attempt to keep > salt buildup from clogging the passages. At present the cooling system > seems fine although the first time I run the engine each season I do have > to reem out the tell tale weep hole on the engine block. > > Richard > -- > Richard Packard > Professor Emeritus > Physics Department > University of California > Berkeley, CA 94720 > http://physics.berkeley.edu/people/faculty/Richard-Packard > 510 525 0279 > _______________________________________________ > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > > To unsubscribe or modify your subscription options (get password, change > email address, etc) go to: > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited. >

There are more different metals in an engine than aluminum.   I would expect to see copper, brass, and steel in various parts of the motor.  I personally would not use any product not recommended or allowed by the manuf. Larry H Retired outboard mechanic On 6/1/20 11:15 AM, Richard P via Trawlers-and-Trawlering wrote: > My dinghy motor is a 3.5 hp Nissan two-stroke. Each year when I lay up the > motor I flush the cooling system with salt away. I do not believe this > product actually removes salt deposits only surface crust. Would it damage > the motor if I submerge the lower end in a bucket of barnacle buster > properly diluted and ran the engine to clean out any salt deposits.