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I am a believer in preventative maintenance and lived with/by PM all my professional life.

Ergo, I am on the side that would consider you to be a cheap a$$.

In fact, I change my tranny fluid every other OCI. Oil and filter by the MM. Transfer assembly and rear diff by the MM. I also do the brake fluid every 3 year-ish. The power steering fluid every 50k-ish. Air and cabin filters every 30k-ish.

I let the TB/wp go to 120k-ish miles before doing that service.

I value my investment in the RL and prefer to maintain it accordingly. Does that guarantee me a long and troublefree service life? No, not necessarily. But just like buying Honda/Toyota, I increase my odds substantially. IMO, of course.

Why would you not wish to continue the recommended (minimal) service intervals?

 

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I frequently go past the 0% mark by several hundred miles before taking care of business. That won't hurt a thing. But if you postpone for months and thousands of miles, you might even forget about it. So I suggest simply being reasonable about it and you should be good.

 

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ILZKR7B11 is what you need.

$10.xx from Amazon.

http://www.amazon.com/NGK-ILZKR7B11...UTF8&qid=1456237065&sr=8-1&keywords=ilzkr7b11

My local dealer will typically match internet pricing (including shipping). So you may be able to better your fluid/filter prices.

Here are some sites you can shop (ignore the link title):
http://www.ridgelineownersclub.com/forums/showpost.php?p=793681&postcount=30

 

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I see no purpose in those myself.

YMMV.

The only thing I MIGHT consider would be to use Techron a tank or two before an oil change. Or maybe Seafoam if there was an issue that a teardown might otherwise require (tick in the engine or maybe an oil leak that wasn't readily fixable).... just in the hope that it might fix whatever ails the engine.

I don't think there's any substitute for consistent, routine servicing (maintenance) and good operating procedures.

 

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Seafoam??? There is absolutely no proof it does anything. Honda doesn't recommend additives of any kind so why would you?

Because some have reported it to fix RMS leaks. Before I spent the money to have the RMS replaced, I would be willing to try Seafoam just like I mentioned above... as an option to cracking the case. I certainly don't think it would hurt anything. But neither do I think it will help anything if everything is running normally.

So for normal operations and conditions, I see no benefit to additives, etc.

 

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Nah. Just suck it up. I'm sure it filters ok. But it is bottom of the barrel in construction quality. OTOH, you can toss it and buy a good one for just a few bucks. Your call. You're not out much money either way.