When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Snake I'll throw my .02 in on oil coolers I've run on my old 96" Ultra Classic and now on my 2023 Ultra Limited stage 2.
Stock both bikes ran hot enough to feel sluggish if I ever got in big city traffic. On my 2010 I added an Ultra Cool fan assisted unit. Easy install and it did help a little bit. The fans kicked in and off as you would expect them to.
When I got my 2023 Ultra Limited with the 114 it ran dang hot stock and at stage one. When I upgraded the cam it was like having a heater when it was cold, that's how hot it got even after tuning. I got the Oil Bud for my model and had to call Bud Clarke several times during the installation process because on my twin cooled motor it was pretty invovled. I had a small problem with a part and Bud took care of it pronto. I can't say enough about how much help Bud was, he's a stand up guy. I liked the idea of the Oil Bud because it didn't really affect the look of the bike and Bud's test data was impressive. It also didn't require any permanent modification of the bike and there are no fans to worry about.
I can honestly say that thing works noticeably better than the Ultra Cool did on my old bike. Before the Oil Bud as I mentioned the bike would get hot enough for the throttle to feel sloppy in big city traffic. That problem is gone now. I can feel the increased "happiness" of the engine in the throttle when it used to be unhappy due to the heat. I will say if it is below about 50 degrees in the winter I will let the bike idle until the fans kick in a time or two so it doesn't take as long to warm up in motion.
Bud gives a great demonstration about how hot Harleys can get in stop and go traffic. Once I saw this video I was sold and am very happy that I installed his product. If you think about it he custom builds aircraft and ain't fallen out of the sky yet, so maybe he knows a thing or two.
. It also didn't require any permanent modification of the bike and there are no fans to worry about.
I will say if it is below about 50 degrees in the winter I will let the bike idle until the fans kick in a time or two so it doesn't take as long to warm up in motion.?
Has anybody got any experience with the oil bud cooler below the frame with respect to debris clogging up the cooling fins?
I know on my truck every time I blow out the radiator from the back there is a lot of debris that comes out, dirt, dust, leaves, bugs, etc. I wonder if it would be more susceptible to getting filled with dirt under the bike.
Has anybody got any experience with the oil bud cooler below the frame with respect to debris clogging up the cooling fins?
I know on my truck every time I blow out the radiator from the back there is a lot of debris that comes out, dirt, dust, leaves, bugs, etc. I wonder if it would be more susceptible to getting filled with dirt under the bike.
Regards,
Crankster
There aren't any fins in the traditional radiator sense. Looking at it up close, the only thing I could see getting stuck would be dandelion fuzz or cotton, fluffy things.
. It also didn't require any permanent modification of the bike and there are no fans to worry about.
On twin cooled bikes the Ultra Cool unit requires cutting of the clutch side lower fairing to install.
I will say if it is below about 50 degrees in the winter I will let the bike idle until the fans kick in a time or two so it doesn't take as long to warm up in motion
I let my bkes warm up enough to get the oil flowing before taking off anyhow, but with the Oil Bud it will take a little longer to warm up to where the throttle feels smooth in cold weather if I don't let it idle a little longer. The Oil Bud acts as a huge heat sink, so it cools the oil even when the bike isn't moving. I still have an EPA approved tune on my bike (boosted VE tables though) so warm up enrichment isn't what it would be on an aftermarket tune. Since I have to go through a fair amount of grass and gravel to get to a hard surface road I want to make sure my throttle is responsive before rolling off.
It definitely is a nice large cooler with a delta of 85* you can rely on it doing it's job.. I didn't hear any mention of a thermostat for cold days, nor does it appear to have a drain.. It looks like it will hold a decent amount of oil that could dilute the new oil change..
Will it clear a motorcycle jack?
Most 10 row, no fan coolers will only give a delta of about 20*-25* in motion and kinda useless in traffic. I did put an ultra cool on my Dyna for my next build, I'm still waiting for it to come back from machining.. In parade mode I have seen engine temps up to 321* on my Dynojet PV-2b.. Never took oil temps, don't have a thermometer.. but I did upgrade the oil squirters to S$S. That alone will help with cooling the cylinders down..
Looks like a nice addition.. Keep us posted..
Did an ultra cool on my 107 and a mates 110. Had high temps, 260s in slow traffic, mates factory 110 was a bit hotter.
After installing when stuck in town the unit picks, after a few miles of 45+ mph itll drop out. Last summer the hottest temp with IR after shutdown was in the low 230s. The blue LED is cool, hid in faring. Also added an M8 filter, the cooler fitting provides the additional clearance. Units are nice and work well if you have the room and dont mind the look.
Running a very non scientific oil test, went back to VR1 conv from M1. Seems to quiet the valve train and a 5 bucks a quart, Ill run two before dropping the filter at 2.5k.
No oil debates here, really DGAF about syn or magic elixirs. Im a Supertech dude in a Motul world. Like all manufacturers, find the cheapest **** that makes the spec.
113” EVO in my Road King. It was 230-245 in traffic. I added an oil cooler, added fans to the cooler, then also added fans at the cylinders. I use to have them rigged so fans ran with the brake light thinking they’d run when I’m in traffic cause I’d be holding the brake.. but I stopped that and just run them on a toggle switch.
Together they do bring temps down pretty fast. Like over five minutes you can see the temp drop about 15 degrees.
I went CHEAP. Like eBay cooler $50, Market place luv jugs $50 or $75 can’t remember. Amazon exterior water rated computer style high cfm fans $18.00.
Buying a used oil filter didn’t bother me. I ran gas through it, sealed and shook it with gas… like 20 times.. flushed it a bunch. Blew it out with compressed air a bunch. I feel confident nothing was in there. It’s worked great and the motor has stayed clean. I cut the oil filter apart every other time and I change my oil a lot sooner than needed just cause I can. About every 2500 miles or so. I use Schaffer 20/50 except middle of summer and then I run straight synthetic 50 weight.
Last edited by Rains2much; Mar 20, 2026 at 05:56 AM.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
