Harley Oil Change Intervals-Engine, Primary, Trans

How Often do You Change your Primary and Transmission Fluid? Kevin Realized he Had Changed his Intervals Without Really Thinking About it. Let Us Know How Often You Change Yours!
⬇️⬇️⬇️⬇️⬇️ Click Show More Below ⬇️⬇️⬇️⬇️⬇️

🏍️ Thank you for tuning in! Be sure to Like / Comment / Subscribe

✅ Get Your DK Custom Products Here

🛒 Our Gear & Amazon
Check out our new Amazon page for the gear we use!

➡️ SOCIAL MEDIA - CONNECT WITH US

The DK Team

[jackklarich]

Good info, I have always changed all 3 holes 3-4 K miles. What alot of folks do not know is clean fluids help maintain a seal better and will suspend more debris between changes
I have never had leaky seals on any of my bikes

[bobberguy]

I've ridden H-D since 1969 and somewhere around 500, 000 miles. Always changed all 3 holes at 5, 000 miles (13 bikes). Never had engine, primary or trans. problem.

[jimkraft]

I am 82 years old, and ride a 99 EVO powered Softail Custom. Since I generally do not ride over 3 to 4, 000 miles a year, I change oil with Castrol 20-50 non synthetic once a year, and change the primary and transmission with Harley transmission fluid every 2 years or so. I have 64, 000 on it and it runs great, with no leaks anywhere. I always warm it up before riding as alloy cylinders need to expand to tighten the gaskets.

I tried Mobil 1 synthetic once, and the base gaskets started weeping. Changed it back out to non synthetic. Stopped weeping in about 200 miles. I love my carbed EVO motor. It runs like a Shovel head with improvements. Plenty of power for an old guy to cruise the back roads around where I live.

I started riding on a 1942 "45" flat head in 1955 when I was 14. Wish I still had it.

[BigCountry]

Guys, there have been many studies on this subject. I used to change my engine oil in all my vehicles @ 3 to 5K. Then I switched back in the late 90's. I started using AMSOIL and went to their extended drain intervals and began changing at roughly 20K miles. I sent off oil sample kits, and every time they came back as great. I dug even further into this. Most advanced oils are nothing like the old oils of the 50's to 80's. There was a study done where they proved people were throwing away perfectly good oil, oil that was still working great and doing what it's supposed to do. The oil companies didn't like this of course, because it was going to cut into their profits. I have a vehicle that I change the oil in every 20K miles and it is getting ready to hit 1/4 of a million miles and STILL runs great! I believe most people are still hung up on the old oil and believe it has to be changed at 5K miles. My wife's uncle had a 1970's Dodge truck that had well over half a million miles, he was a mechanic. He ALWAYS changed the filter and added a quart and that truck was still running fine when he passed away. Now I don advise anyone doing this, but I do believe the oil change intervals were done primarily for the oil companies to sell more oil! That's all I'm gonna say about this. Do what you feel is fine and do what the manufacturer says as long as the vehicle is under warranty. My bike, using AMSOIL in all 3 holes, does not get good oil thrown away because the manual says so, but my bike is an 05 Electra Glide and not under a warranty. I suggest doing a few oil samples from a reputable company and that will probably open your eyes a bit on the oil change scam.

[dennissutphen]

I have a 2019 Triglide and I change every 5k miles. I use amsoil 3 hole motor oil, primary oil and Trans fluid. You guys are great and I've learned a lot from watching your vlogs ty

[DWinthekeys]

Interesting that when you take it to a dealer for an oil change, they don’t tell you if they do just the engine or if they do all three holes, but they still charge around $300 to $500 for a service regardless of your mileage. I just started changing my own oil and I think I will stick to all 3 holes every 5k miles.

[johnholley]

Change mine every 3-5 thousand miles. The same as my trucks and cars, been doing that way for 34 years an haven't had any problems or issues with any of my bikes or 4 wheeled vehicles. As you stated the cleaner the crap catching magnet is the better it works and always remember to check it to make sure it's still magnetized before reinstalling it. Sometimes they can lose it if they get to much trash on them for long periods of time. As the old saying goes, " if it ain't broke, don't try to fix it." Ya'll ride safe, have a Merry Christmas and keep the shiny side up and rubber side down.

[SA-hkxj]

Once a year or 5k whichever comes first. All three holes, all the time. Own an 02 FatBoy with only 40k but still changed all three, every fall, and have had no issues whatsoever.

Had my tension shoes replaced at about 27k, and was planning on replacing the Oem cam with a new one since it was being done. Tech told me there was no wear at all on the cam and to keep doing what I was doing in regards to fluid changes.

Originally used only Dino oil, since Syn3 was not out yet, but somewhere over the years I switched to syn3 or similar and never looked back.

Frequency is the key. Cheap investment and a couple hours a year to keep it purring 😉👍

[thSwarde]

On my 07' Fatboy I followed the owners manual on fluid changes. I have 46K+ miles on the bike now. I use AMSOIL synthetic V-TWIN engine oil 20W-50 in the engine, AMSOIL V-TWIN Synthetic Primary Fluid in the primary, & AMSOIL V-TWIN Synthetic Transmission Fluid in the transmission. I changed the engine oil @ 3K miles, primary @ 10K miles, & the transmission fluid @ 20K miles. After my last oil change (May 2022), I decided to change the primary fluid, & the transmission fluid @ 3K mile intervals, along with my engine oil change. Most of the time, I change the engine oil yearly, as I haven't been able to put many miles on my Fatboy in the last 3 years. I hope to get many more miles on my bike in 2023. I haven't rode since mid July of this year, due to health issues.

[fxst]

I have an 03' softail 42mm mikuni standard softail. Bigger heads, pistons, cam from a 88 to a 103 running a 240 tire final drive. I have changed all 3 holes once a year with syn 3 cause I don't even drive my bike 5K a year. Due to covid bike fluids havn't been changed or started for 2+ years. Bike started easy with throttle primed, choke on with compression release valves started and runs great!

[bigm]

You blokes must be psychic. I was just wondering about this last night. My 2018 Freewheeler is about to clock up 24000 km (15000 miles) so is due for the full service. Thanks gentlemen!

[BrewCityRider]

Good stuff guys...I never thought about this. I may go back to 5K for all 3. By the way, I use Mobil1 V-twin full syn in all 3 holes.

[RonNorman-oq]

Engine at 2500, primary & tranny at 5000 on my 2001 Road King. At 90500 it still runs great. I've used Lucas 20w50w since break in at 1000 miles. If you want to talk about a critical component, talk oil filters. I use K&N.

[FranBunnyFFXII]

I use Amsoil in all 3 holes, and I clean my oil filter every 2500 since I have an Outlaw Oil filter and they can clog faster than synthetic filters. It's super easy to do so it's not biggie to pull it off, wash it, and put it back on.

[TRAFFICSTOP-bghj]

Thanks guys, one of the best video's I've seen in a long time, not just on your channel; but in general as I'm a HD junkie. Boys you are correct, Canadian here and my manual says engine oil/filter every 8, 000 kilometers, primary every 16, 000 kilometers and tranny every 32, 000 kilometers (negative the 1st service at 1, 600 kilometers that change all 3 holes to keep warranty valid). I have a 2022 Street Glide Special I bought new, and do it at 4, 000 kilometers (50% before their engine oil recommendation change kilometers/miles) plus the primary and tranny at the same time. It's not expensive and I love knowing I have fresh clean oil in all 3 holes.... all the time. Thanks for posting this, it's common sense really. I have to be honest I never thought of the HD carbon foot print issue to try to get customers to stretch out oil changes. I never understood my manual why such long miles between oil changes, now I know. A publicly traded company trying to lower carbon foot prints. Every day I learn. Always go with your gut feeling people. What an eye opener.

[shawman]

Hey guys, we have all been told to change oil every so many miles and that was due to oil companies. Oil doesn't break down the two concerns are the pH and contaminants. We still have guys that change their oil every ten thousand miles in the trucking industry but I know guys that have almost a million on an oil change. I don't see the advantage of changing the oil every 5 thousand for your 20 thousand intervals. If the oil is bad at that point you have bigger issues that wasn't caused by oil change intervals.

[schachat]

2008 FLSTC 105th Anniv Stage 1-every 5000 miles: SYN3 20W-50 engine, HD SYN 80W-140 Primary & Transmission-bike spent 5 years in Qatar (60° C in summer) before exporting to Cape Town South Africa-69K km’s on the clock and runs fantastic (maintained it myself from day 1)

[BADog-ewox]

I change all 3 yearly regardless of Mike’s beings my trike sits all winter, one thing most people don’t think of is the possibility of moisture getting in your oil’s from cold to warm temps in humid claimants like we have here in Illinois, so to be on the safe side of things this is why I do mine yearly

[NKBobcat]

I live in South Florida, in Palm Beach County. It's hot here all year and my MC often rides in Memorial Day and Veterans Day parades. Keeping the bike as close to 230° F as I can. I have the Harley fan and a set of Love Jugs, but I always change my oil between 3000 and 4000 miles. I use Redline oil, Redline Primary fluid and Redline Transmission fluid w/ shockproof.

[hemmosluiter]

I change mine every 3500 miles. Amsoil and redline shockproof with k and n oil filter. No problems.