Question about 2004 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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I have a 2005 HD FLHTCUI does this bike have seperate engine oil and transmission fluids? If they are seperate how do I check the tranny fluid?

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Yes, you bike has oil in three seperate areas. The engine, primary, and the transmission. I'm assuming you know how to check the oil level in your engine because you didn't ask. It's the large knurled cap on the corner of the transmission with the LONG dipstick.

To check you transmission. look for the chrome clutch release mechanism on the right side of the bike. If you can't find it, simply follow the clutch cable until you get to where it goes into the transmission, that's it. In that cover, there is a large plug that requires a 3/8" Allen or Hex key to remove. It has a dipstick on it. Keep the fluid level between the two marks. Check the level with the bike standing straight up.

To check the primary level, remove the derby cover and stand the bike straight up. The oil level must be no higher than the lowest point on the Clutch Spring. The aluminum outer clutch basket is made of bright aluminum, the clucth spring is a darker colored steel disc. Fill the oil no higher than the bottom of this disc. If you do, the clutch will drag and you will not be able to find neutral with the engine running.

Good luck

Posted on Oct 16, 2010

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??? Umm no it is not separate that is y thare is only one dip stick the trans connects to the rear of the motor and shares the oil for both the motoe and the trans. I also have a 2005 ultra. FLHTCUI. And win I bought it I decided to learn everything I coulees abought the bike I evin went to a scrap yard and bought a totaled bike just so I could tare it down and build it back up. If you won't to know your bike I recamend you get every book on your model year and also check the net for tips and tricks and video's it would be a good idea just incase you have a issue with your bike... If your gunn a hone a Harley ya need to know your bike for your sake and your bike's..

Posted on May 30, 2011

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1 Answer

2001 flhtcui fluid specs

Hi Anonymous, oil capacities on touring models:
1. Engine oil 4 qts. with filter Hd Multi Grade 20w50.
2. Transmission oil 20-24 oz HD Transmission Lubricant.
3. Primary oil 32 oz. HD Primary Chaincase Lubricant.
Have a nice day.

Mar 20, 2013 | 2001 Harley Davidson FLHTCUI Electra Glide...

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2002 ultra glide transmission fluid

Hi Anonymous, 20 to 24 oz. HD Transmission Lubricant. Have nice day.

Aug 26, 2012 | 2002 Harley Davidson FLHTCUI Electra Glide...

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Where are the plugs to change the oil and transmission fluid.

The drain plugs for the engine oil and the transmission are on the bottom of the transmission. The oil taak is on the bottom of the transmission.

Goo dLuck

May 01, 2011 | 2005 Harley Davidson FLHTCUI Electra Glide...

1 Answer

How do i check transmission fluid level

On the right side of the bike on the transmission, there is a chrome end cap. This is the clutch release mechanism. On top of it is a plug that takes a 3/8" hex key or Allen wrench to remove. Stand the bike up straight and take the plug out. It has a dip stick on it. Wipe it off and stick it back in the hole, don't screw it n. Take it out and the fluid level should be between the two lines. Your transmission holds 20-24 ounces of transmission lube. It came with H-D Syn 3, 20W50 engine oil in it.

Good Luck

Apr 13, 2011 | 2001 Harley Davidson FLHTCUI Electra Glide...

2 Answers

Need to know how to change oil in 2000 dyna low rider-what kind of oil to use and -how to change transmission fluid and what tranny fluid to use

There are two plugs on the bottom of the transmission, one for the engine oil, one for the tranny lube. The engine oil drain is the one that is closest to the left front corner of the oil pan. The other plug is the transmission.

The engine requires three quarts of oil, the tranny takes 20-24 ounces of oil.. Check the engine oil with the bike on the side stand. There are two marks on the dipstick. The upper mark is the "FULL HOT", the lower mark is the 'FULL COLD" mark. Keep the oil level between these two marks and do not overfill.

On the transmission, on the right side of the transmission, you'll see a chrome clutch release cover. It's behind the exhaust system. There is a plug that takes a 3/8" Allen or Hex key to remove. Check the oil level with the bike standing straight up.

As for what lubricants to use, I always use nothing but Harley-Davidson oil. 20W50 Syn 3 oil in the engine, transmission, and primary on 2000 and later model bikes. However, you can use other oils such as Amsoil, Royal Purple, Mobil, Motor Factory, and many others. Synthetic or petroleum based, your choice. Check the website of the manufacturer that you wish to use.

Good Luck

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One and the same- that is why, if you use an oil that is not motorcycle-specific, make sure that it does not have the "energy saving" label in the grade rating emblem. I have run Shell Rotella, both dino and synthetic, for most of the 32K of my Boulevard.

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1 Answer

I have a 2001 FLHTCUI. Where do you add transmission fluid and is there a dipstick? It says there is in the owners manual but I can't seem to find it.

Yes, there is a dipstick. Right where your engine and transmission come together, there is a round cap about an inch and a half (40mm) in diameter or so with knurled edges. This is the oil spout plug and it has a dipstick. Check your oil with the bike on the side stand. There are two marks on the stick. The two marks indicate Full Hot and Full Cold. The oil level should be between these two marks. Do not overfill the oil tank that is on the bottom of the transmission.

On the bottom of the transmission threre are two drain plugs. The drain plug in the center is the transmission fluid drain, the drain on the left front is the oil drain plug. You engine takes three quarts of oil with the filter change. You transmission take 20-24 ounce of H-D transmission lube.

Mar 26, 2010 | 2001 Harley Davidson FLHTCUI Electra Glide...

1 Answer


Most are using Syn3 oil in engine, tranny, and primary.
This simplifies this, and is a decent oil.
32oz of oil in primary.
20-24oz of oil in tranny
99851-05 primary case/ trans oil(Conv Oil)

there are other brands that surpass the syn3 oil but it takes some hunting around to find a supply.
Ammsol is one such brand and they recommend.
20w50 engine
15w40 primary
75w90 tranny

Hope this is of some assistance

Apr 20, 2009 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

How to check transmission fluid level

The bike has a wet clutch and the engine oil lubricates it. There is no transmission fluid.

Feb 22, 2009 | 2004 Harley Davidson FLHTCUI Electra Glide...

4 Answers

98 fatboy engine noise.

Harley's do run hot, anywhere from 220 to 240 normally, and a little hotter this time of year. I suggest running a straight weight oil, and a little heavier weight in the summer. I use Valvoline VR-1 30 weight most of the year, and 50 or 60 weight in the hot summer, and I use Lucas 20w50 primary/trans for the primary and tranny. I don't bother with the extremely high prices of the HD oils. For the whining noise, you need to determine which side of the engine it's coming from. Whining will almost always be in the bottom end. There's nothing in the top end that should whine, and if there is whining from the top, it's usually an air leak around the carb. Start by checking the fluid levels in the tranny, and primary. These are the two most common areas to pick up a whining noise. If it's coming from the left, it's going to be in the primary, and usually this is caused by low fluid levels. From the right, it's going to be either the tranny, low fluid, or the oil pump. The oil pump is a gear type system. If you're running a light weight oil, say a 10w40 or HD 20w50, when the engine heats up and the oil thins, it can cause the oil pump gears to whine a bit, especially in the summer heat. So, check the fluid levels, if they check good, then change the oil, since the summer is coming to an end, go with a straight 30 weight. This should clear up the whining noise. If it doesn't, get back to me with the exact location the noise is coming from, and we'll go to the next level of diagnosing the whine, but I believe that this will cure it.

Aug 22, 2008 | Harley Davidson Harley-Davidson Motorcycle...

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