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Yamahshield vs Yamaha Silicone Spray (For Engine)?

Old 04-20-2019, 11:01 AM
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Default Yamahshield vs Yamaha Silicone Spray (For Engine)?

Which is the spray of preference for spraying down the motor under the cowling? I've heard one of them can get tacky and yellow over time but not sure which. Which is the prefered spray?


Yamaha Silicone Protectant and Lubricant
https://www.shopyamaha.com/product/d...&dealernumber=

Yamashield
https://www.shopyamaha.com/product/d...-motor-company



Old 04-20-2019, 11:36 AM
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I know this may not directly answer your question but my mechanic, who is a Yamaha Master Tech, uses T-9 Boeshield. I believe T9 and Yamashield are the same rebranded product. I just sold a pair of 14 yr. old F250's that were periodically sprayed with T-9 and there was not a speck of corrosion anywhere.
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Old 04-20-2019, 11:37 AM
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Yamashield for the powerhead. It's basically a copy of Boeshield T-9 but dries clearer and is cheaper so I like it.

Yamaha Silicone Protectant and Lubricant: use this on the cowling gasket. I don't use on the motor because the description says something about potentially harming painted surfaces...
Old 04-20-2019, 11:39 AM
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Originally Posted by dxs217 View Post
Yamashield for the powerhead. It's basically a copy of Boeshield T-9 but dries clearer and is cheaper so I like it.

Yamaha Silicone Protectant and Lubricant: use this on the cowling gasket. I don't use on the motor because the description says something about potentially harming painted surfaces...
Not debating this but I'd be shocked if anything with the Yamaha name on it is cheaper.
Old 04-21-2019, 10:09 AM
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Can anyone confirm Yamashield doesn't yellow and get tacky over time? Would hate to put the wrong stuff on a new motor.
Old 04-21-2019, 11:21 AM
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Originally Posted by littleblue View Post
Which is the spray of preference for spraying down the motor under the cowling? I've heard one of them can get tacky and yellow over time but not sure which. Which is the prefered spray?
What does your owner's manual suggest?
Here is a snippet from an F225/F250/F300 OM:

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Old 04-21-2019, 06:11 PM
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Originally Posted by tarpononecharter View Post
Not debating this but I'd be shocked if anything with the Yamaha name on it is cheaper.
Think I got a bottle for about half the price. I was shocked to that anything Yamaha was cheaper.

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