2 oz makes a differenct
Seasoned HDF Member
Joined: Dec 2017
Posts: 5,076
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From: Plover, WI
As I think about this more, I am sure it is just the newness of the friction plates as there isn't much clearance and the extra bit of oil takes that space up. I am sure after a couple of thousand miles it probably won't make a difference. Something that does bother me is why the engineers can't design for serviceability? 30 Oz of oil? C'mon, you couldn't make it an even 32 Oz? And the fellow with the 38 Oz, you make him buy a second quart to get 6 Oz of fluid. That's the kind of stuff that is just crazy. I wonder how many problems would be solved if things were designed with serviceability in mind. I realize it's beyond the scope of this forum.
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Tourer
Joined: Jun 2019
Posts: 283
Likes: 170
From: Raleigh, NC
If the engineers designed your primary to be refilled with exactly 32 ounces of fluid to ease serviceability, they would need to design the Canadian, European, and Latin American primaries to be refilled with 33.814 ounces of fluid. Oil is sold in 1 liter bottles in those countries.
Seasoned HDF Member
Joined: Oct 2012
Posts: 13,040
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From: Texas, USA
My primary takes 38 oz on a wet change. The 1st time I did it myself I carefully and slowly measured what came out when I drained it - 33 oz. I put 33 back in, it just didn't feel right. I ended up adding 4 oz -- a 1/4 cup! It then seemed fine. Every since when I change I go back with 38 oz and all is fine. That's all I know for my bike.
Grand HDF Member
Joined: Jan 2012
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From: Oklahoma
It still amazes me the number of people who put in a fixed amount of oil and then BELIEVE the level is correct. The amount of oil actually needed depends on the amount drained out. If a few ounces are left behind, then the FIXED amount of replacement oil will overfill the reservoir. As stated by most, it is not critical, but the factory supplies DIP STICKS for a reason and a level reference for the primary. Some people take great pains for a thorough drain, others just let the fluid run out until it stops and reinstall the plug. Each technique requires a different amount of replacement lube to achieve the SPECIFIED level.
Ultimate HDF Member
Joined: Oct 2011
Posts: 5,691
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From: Olean, NY
^ Correct. Im already looking into the hole to replace the primary fluid so I also just pour it in until its at the correct level. Its a simple fluid change, and I agree, some people just have to make it more difficult than it really is.
Seasoned HDF Member
Joined: Dec 2017
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From: Plover, WI
And your F250 has what engine in it?
Road Warrior
Joined: Mar 2011
Posts: 1,456
Likes: 132
From: Deep South, Louisiana
My 19 calls for 28 oz. in primary and 30 oz. in the trans. Yes different than my last bike of same model. But always check that it is to the full mark
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From: Edmonton, Alberta
If the engineers designed your primary to be refilled with exactly 32 ounces of fluid to ease serviceability, they would need to design the Canadian, European, and Latin American primaries to be refilled with 33.814 ounces of fluid. Oil is sold in 1 liter bottles in those countries.
For example, the oil I bought yesterday for my D.D. oil change came in 5 US qt (4.73 liter) and 1 US qt (.948 liter) containers.
And it's the same situation here with many motorcycle-specific lubricants as well.