HD's M8 vs Indian's 108cu.in. oil consumption - Page 2 - Road Glide Forums
Fluids and Lubricants discussion of all fluids and lubricants

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post #11 of 21 (permalink) Old 11-20-2019, 06:33 PM Thread Starter
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Originally Posted by craigffb View Post
Bro I hate to tell you but this is nothing new.



Check the date.

Sell that POS Harley and get an Indian. I hear they actually produce oil as you ride them so you can drain some off and save it for later. Way better deal.


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I have seen this sheet before and it addresses 2005-2006 models of the TwimCam; this sheet does not cover M8's.

Is there a Technical Bulletin (TB) that allows the M8 engine to burn oil, or is this an urban myth?
.
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post #12 of 21 (permalink) Old 11-20-2019, 06:49 PM
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Ok..... I hate to jump into this as it's been discussed on several other oil threads. If you go talk to about any other auto manufacturer they will tell you the same thing. Even BMW motorcycle will tell you that amount can be considered normal. This does not mean that the manufacturer is saying that all M8' use this much oil. In fact, most don't even come close to that. Move on to another topic if you are trying to justify buying the Indian.
Hell, BMW cars! I have a 2013 535, every now and then I need to add a quart. I asked about it at the dealer, they gave me a sheet explaining it. Seemed like all the service writes had copies in their top drawers.
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post #13 of 21 (permalink) Old 11-20-2019, 07:19 PM
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Hell, BMW cars! I have a 2013 535, every now and then I need to add a quart. I asked about it at the dealer, they gave me a sheet explaining it. Seemed like all the service writes had copies in their top drawers.
https://blog.bavauto.com/16943/bmw-h...-si-b11-03-13/

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post #14 of 21 (permalink) Old 11-20-2019, 08:43 PM
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Quote:
Originally Posted by Wood View Post
I have seen this sheet before and it addresses 2005-2006 models of the TwimCam; this sheet does not cover M8's.

Is there a Technical Bulletin (TB) that allows the M8 engine to burn oil, or is this an urban myth?
.
Doesn't seem like you quite understand what everyone is trying to point out here. It also seems like you may have an issue with the M8's and you are focused on trying to make them look like they are major oil burners. I'm not really sure though but that's how I'm reading it. Yes that sheet in particular addresses 2006-2006 TC models but there are probably other documents that addresses all the other years because in applies to them as well. Understand that just because you might have to add a quart of oil to an M8 or a TC in 1k, 3k or even 5k miles it doesn't necessarily mean that it is burning the oil. The oil could be puking through the crank case breathers and into the A/C. Very common and normal in most cases as long as it's not excessive or as long as there isn't another issue with the engine that is causing it.
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post #15 of 21 (permalink) Old 12-07-2019, 08:28 AM
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I've got 2017 m8 stage 2 ran hard 15,000 so far no use between changes
post #16 of 21 (permalink) Old 12-07-2019, 09:06 AM
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I've got 2017 m8 stage 2 ran hard 15,000 so far no use between changes
Over 35,000 on the 2017 no oil burning and it is tugging a sidecar.


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post #17 of 21 (permalink) Old 12-07-2019, 11:56 AM
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I watched a couple of video's on oil consumption where this guy's M8 was using oil and he decided to do a big bore kit and cams to fix the using oil problem and make his bike faster. The mechanics at the HD shop said the reason M8's use oil was due to the oil ring, swiper ring, i think he called it, was to thin. The oil ring in the big bore kit was much thicker, no doubt. At least that was the reasons that shop came up with. Also they said that they have found on several M8 bikes that the parts that squirt oil under the pistons were loose and had to be re-torqed before they buttoned everything up. Just passing on some info i heard from a well established HD shop that i subscribe to on U tube.
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post #18 of 21 (permalink) Old 12-07-2019, 12:13 PM
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If you have an M8 that uses oil, the first thing you should do is check behind the air filter.

Pull the filter off and check right at the opening of the throttle bore. There is a recess there that tends to catch oil that has passed through the breather system. I've checked about a dozen now, and half were dry. The other half varied from being damp to having a spoon full of oil in the recess.

If you scooter is using oil and its wet in the recess, it needs to be checked for sumping. If its not sumping then it could be an issue with the breather in the head or a ring issue (crankcase pressure)

You can also use a bore scope to read the top of the pistons. Reading pistons is part experience and part voodoo, but basically a piston that is carboned up in the center and clean around the edges has bad oil ring seal.



In the photo the left piston shows classic oil control ring issues. And because its just on one side of the piston, the jug would be suspect. And on examination the jug was out of round. And this one was smoking under a hard load. Most will not read this easy, the clear margin will be much narrower.

Now if you have one that sucks oil through the throttle bore, the quick fix is to vent it to the atmosphere. Doing so will not earn you any suckup points with the EPA, but it will cure the issue and costs less than $20 to do.
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post #19 of 21 (permalink) Old 12-08-2019, 08:46 AM
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My 2017 RGU has 50k miles. I added 1/2 quart one time. I guess mine was built on a Wednesday��
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Last edited by Emil1; 12-10-2019 at 01:15 AM.
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post #20 of 21 (permalink) Old 12-08-2019, 03:04 PM
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My 2017 RGU has 50k miles. I added 1/2 quart ones time. I guess mine was built on a Wednesday🍸
Yea but I got the good 2017. No sumpping, no transfer no oil burning no water pump or oil pump failures. It must be a freak, I heard they all do it.
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