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best spray to prevent corrosion on new outboard

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best spray to prevent corrosion on new outboard

Old 06-02-2015, 11:59 AM
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Default best spray to prevent corrosion on new outboard

Bought a new small Honda outboard which is scheduled to be delivered in a few hours.

Motor has a good reputation for being reliable but on other hand many complaints about the metal used not being designed for Marine/salt water environments. Power head bolts tend to corrode and I would like prevent that before it even starts.


Years ago we used WD40 and it seemed to work. Still good or something better?

Thanks..
Old 06-02-2015, 12:02 PM
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Crc-656
Old 06-02-2015, 12:02 PM
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WD 40 has a too low viscosity, due to being a penetrant oil as well as conservant, and as such in quite a short time it will be gone from the surfaces you intend to protect, you need something more grippy and viscous ..... IMHO
Old 06-02-2015, 12:03 PM
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Navy and Air Force use a product developed by Boeing..... trade name Boshield

But I can tell you nothing works, keep your engine clean and rinsed of salt water.
Old 06-02-2015, 12:08 PM
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Some people believe that if the motor is properly painted, spraying a corrosion inhibitor on it just provides a sticky surface for dust.

When I worked in a machine shop, we sprayed LPS 1 2 or 3 on blocks and heads before putting them on a storage rack, but that stuff wasn't cheap.

My policy is to keep it clean in the first place and wire brush and repaint any rusty areas every spring.
Old 06-02-2015, 12:12 PM
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the old timers used to dump a quart of 2 cycle oil all over it. Made a mess but after you ran it for a while, it kind of "settled in" and provided a protective coating.

I like corrosionX or as previously mentioned, boeshield
Old 06-02-2015, 12:12 PM
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Corrosion X has been my go to as well as Amsoil Metallic Protector.
Old 06-02-2015, 12:13 PM
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Boeshield
Old 06-02-2015, 12:14 PM
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T9 bioshield. DONE.
Old 06-02-2015, 12:28 PM
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I use boeshield on my 2001 Hpdi's and they look great...I find no build up from it being on there.
Old 06-02-2015, 12:35 PM
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Originally Posted by rjtfd View Post
Crc-656
X2
Old 06-02-2015, 01:42 PM
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CRC Heavy Duty Corrosion Inhibitor, http://www.crcindustries.com/auto/?s=06026
656 is a lubricant.
Old 06-02-2015, 02:02 PM
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Check out Fluid Film too.
Old 06-02-2015, 02:20 PM
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T9 Boshield
Old 06-02-2015, 03:00 PM
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For my Go Devil engine I use 1:4 mixture of Mobil 1 10W30 to WD40. Spray it on prior to every third maybe fourth trip. After I spray it on I run it. Smokes like a cheap cigar but the WD40 burns off pretty quick acting as a carrier. The Mobil 1 one settles in and provides a nice protective layer.
Old 06-02-2015, 03:07 PM
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Originally Posted by dihrah View Post
Navy and Air Force use a product developed by Boeing..... trade name Boshield

But I can tell you nothing works, keep your engine clean and rinsed of salt water.
I used t-9 on my Susuki but after a few years it had a buildup of brown sticky goo all over it. Didn't rust but made the motor look a lot older. I had to try to wipe it all off with solvent before I sold it recently. Im gonna try a high grade waterproof silicone on my new motor.
Old 06-02-2015, 04:22 PM
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Silicon spray. but not on the belts.
Old 06-02-2015, 05:31 PM
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Will the spray cause the o2 sensor(s) to go haywire?
Old 06-02-2015, 05:38 PM
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Fluid film for sure.

Mercury also has a sealant spray to be used after you LIGHTLY wash your engine below the belt line with soap and water. Wait for it to dry and spray the sealant that forms a hard coating....

May also work with Hondas....
Old 06-02-2015, 06:41 PM
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I use yamasheild.... For now.

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