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Undercoating or Not


GordonZoo

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Of late, We have been undercoating our newer vehicles as the salts in the north were eating the frame to pieces. I had read there is a lot of aluminum in the new Nav. Has anyone decided to do an undercoating on theirs? There is a place in NH that has a one and done black tar type of undercoating that looks good but I'm not sure if these Navigators have the same rust issues of past. My 2007-1/2 F-150 damn near broke in half in 8 yrs. I plan to keep this one over 10 yrs.

Rich

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Thanks for the feedback. It would save me two trips, car rental and $850. So nothing under the new Nav will rust. Are the brake lines stainless? Is there any place I could read up on what's different now that prevents rust like Galvanization or more Aluminum in the frame? I know of late Ford is using a lot more aluminum for weight but even my last Nav had a creeping rust between the paint and the aluminum back hatch. But underneath is my main concern. I lost my dodge ram and ford F-150 due to salts and I always spray off when possible. Shame on me for getting fooled the third time.

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Looks like Krown oil a yearly application? From videos, I looks like it does the job though and it's initial cost are a cheep alternative to my previous vehicle treatments. However, I'd rather not undercoat at all if the Nav is all aluminum and stainless lines underneath and totally immune to rust. I really didn't get an answer at the dealership. They just wanted a sale. It would be great to understand if this new Nav has totally addressed all material changes regarding longevity.

Thanks for all your inputs.

Rich

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