Lower unit gear oil change time! Mercury outboard 75, 90, 115 and Pro XS models. Easy DIY video!

[@MR_Garage]

Links to all my 115 merc videos: Oil Change kzbin.info/www/bejne/e3OnlXuNo61-mMU Lower Gear Oil Change kzbin.info/www/bejne/iF7YkoiirrNrha8 Spark Plugs kzbin.info/www/bejne/iXaoineerrmfbJo

[@2inHeartattack]

That prop needs some dings in it. Too damn nice lookin.

[@MR_Garage]

Right!!!!

[@TheShawline]

Thanks, recently over to the Mercury 115 after many years with Yamaha. Was wondering where the drain is. !

[@MR_Garage]

I really like Merc's system here for oil. I never thought I would be a mercury fan but after owning one, I am impressed. Next outboard will be a merc too.

[@chadmitchell874]

Great and superb guide from a hands on Wrench. Thank you, I just bought a Merc 115 boat today so you just saved me probably $200

[@MR_Garage]

Appreciated and glad to help!

[@freddie3159]

Great detailed video. You just me it easier for me to change my gear oil. Thank you.

[@MR_Garage]

Great to hear!

[@elliotmarshall1016]

Good video thanks. My buddy and I did this on his 2021 115 pro xs, and gear oil came out the water intake on both sides, any idea what would have cause this ? Thanks 😊

[@scottdouglas1538]

Excellent video, thank you!

[@scottdouglas1538]

So did you replace the sealing washers too? Or did you just inspect?

[@MR_Garage]

I have not replaced them yet. I can't remember the material they were made from, but I always inspect. Been a while since I posted this video.

[@scottbeach7491]

Thanks Sir . Bless ya

[@hollythompson3385]

So...first time maintenance on this. The gear oil is milky. Just replace the seal?

[@samlamacchia1864]

very helpful

[@MR_Garage]

Happy to help! The biggest thank you we can get are likes and a subscription to the channel - those go a long ways for our tiny space on youtube!

[@macking4942]

Mr. Garage. So i have a 2019 Pro XS 115. I change my gear oil this weekend base on your video! Great instructions!! I do have a question though. When I removed my prop, I noticed that the plastic ring behind it came out with it. I also noticed that one of the tabs on it was broken off. It seems to go back in fine, but seem to move a little. Should I be worried about that piece? What is it called and what's the purpose behind it? Thanks again!

[@RockyZajThoj]

you should replace it, its called bore sleeve prop, helps relieve pressure. parts runs about $10 or so

[@rmdatv]

Thanks for posting. Would tipping engine up help reduce oil coming back out?

[@MR_Garage]

I would only do it level as shown. Changing angles would also change the overflow point and possibly fill volume.

[@goodmanfishing]

How do you like that spitfire prop? What speeds are you seeing?

[@bunkman64]

What should the nut be torqued to?

[@MR_Garage]

55ft lbs

[@Jack-ox8ny]

Great video. Very detailed and helpful. Thanks. But having to take the prop off is insane. The engineer who,designed this should be fired.

[@MR_Garage]

They did it on purpose, forces you to take the prop off and inspect for line wrapped up around the shaft.

[@thomasblake268]

I have the same motor on my tri toon. I noticed you have a 4 blade spit fire prop. What side is the pitch

[@MR_Garage]

For this boat, 17p and 19p were great options.

[@arkadiusznowak6480]

Hello. What is the difference between the Mercury 115 PRO XS with a black bottom and a silver bottom?

[@MR_Garage]

Silver bottom is the command thrust lower unit with different gear ratio.

[@mbeanbag2]

So unless I missed it somewhere and can't find it in the comments, how much lube did it take to fill the case? Thanks

[@MR_Garage]

5.5qt

[@Muskyfishn84]

27.1 oz in the lower unit

[@tyler560]

Will changing my oil and gear oil myself void mercury warranty?

[@MR_Garage]

Legally, no. A prick dealer hell bent on forcing you into their service with lies, yes.

[@christopherwilliams4647]

With running the Stainless 4 blade did you gain or lose high-end RPM? I have a similar boat with an aluminum 4 blade I want to switch to.

[@MR_Garage]

Hello, Top end RPM depends on prop pitch vs outboard combined with slip. 4 blades grip the water very well so not as much slip. 17p is great for this hull size with a 115. 19p and you get into the lower 5krpm range.

[@paulkersey2179]

Can you give me the details on that prop? I saw 17P?

[@Chris-ic1mn]

How many quarts should just take?

[@mowog59]

What engines does this apply to? I have a 2013 90 4 stroke EFI. Mercury is confusing with their nomenclature.

[@MR_Garage]

You have a 1.7L mercury outboard, the previous generation. Low gear oil is pretty similar across most outboards, could have a drain plug in a slightly different location is all.

[@bms2550]

What pound setting do you use to torque that prop nut on???

[@MR_Garage]

55ft lbs

[@MS-kr2yg]

What prop pitch are you running and how do you like the X7?

[@MR_Garage]

Prop is an x7 17p. Perfect prop for this hull and outboard

[@jamiejohnson1200]

👍💦