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Done
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What can I expect the engine oil temp to be during normal summer running? Did a 400 yesterday and it got in the mid 80s here. In town it was running around 235-240. The rear cylinder cut-out kicked in a few times at stop signs. Highway about 215-225. How warm will these motors get and still be ok?

On a different note, had a friend tell me yesterday that a local dealer told him he has to run either syn in all 3 holes or dyno in all 3. He said they told him you can't run syn in 1 hole and dyno in the other 2. Why the hell would that matter?
 

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Oil temp will depend on if you have an oil cooler or not, 230-310 deg.

Dealer is full of it...run whatever type you feel is best for YOU.


:coffee:
 

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I {Heart} Hookers.
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TC engines demand more out of the oil. The 96-up engines are some of the hottest running engines that incorporate piston oilers that spray the underside of the piston to keep it cool. EFI bikes are the worst.

Your dealer telling you that you have to run either all syn or all dino fluids is the same as me telling you that this weekend, you can only hump skinny chicks or fatties. No mixing.

Never drink the bong water.......
 

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I do have a factory installed cooler. 310? For real?
If it is factory stock, yes. Adding a tuner ( of whatever kind YOU like ) will rich'in it up and cool it down ( and be more fun to ride BTY) .

Syn oil will make it run a few deg cooler, but not enough to really notice tho.

Removing Cats will really cool it off. ( I did not say that tho )


:coffee:
 

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I {Heart} Hookers.
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What can I expect the engine oil temp to be during normal summer running? Did a 400 yesterday and it got in the mid 80s here. In town it was running around 235-240. The rear cylinder cut-out kicked in a few times at stop signs. Highway about 215-225. How warm will these motors get and still be ok?.............
Sounds about right for engine temps. The manual for my model states normal engine operating temp is 235*.

I have found that there is "no one fix-all" in reducing oil temps. Besides avoiding big city traffic, for me a combination of a good engine tune, synthetic oil, oil filter cooler, oil cooler all in combination work well in keeping the oil temps in check.
 

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Your dealer is full of it and the HD syn3 oil isn't the best oil out there so you may want to make a change anyways.
I would use a full synthetic in the engine because it will not break down in the high heat like dino oil will.
 

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Done
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Discussion Starter #9
Thanks guys. This wasn't my dealer, btw, it was a friends dealer. I don't go there. I do have a download and the cat removed. I run Amsoil in the engine. Thanks again fellas.

Nice analogy Dave. It was a coffee spitter.
 

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Imperial Wizard...
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Don't drink the bong water...lol
 

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What can I expect the engine oil temp to be during normal summer running? Did a 400 yesterday and it got in the mid 80s here. In town it was running around 235-240. The rear cylinder cut-out kicked in a few times at stop signs. Highway about 215-225. How warm will these motors get and still be ok?

On a different note, had a friend tell me yesterday that a local dealer told him he has to run either syn in all 3 holes or dyno in all 3. He said they told him you can't run syn in 1 hole and dyno in the other 2. Why the hell would that matter?
I know a lot of riders are looking for a quality engine
oil temp gauge and have come across a lot of junk.

So I thought I'd do a review for the JES Custom Accent's
Engine Oil Temperature Gauge. I purchased this gauge
to fit my 2019 H-D Ultra Classic with the 107 M8 engine.

Item : # 17-P Wht Oil Filled Eng Oil Temp. All FL's.

This specific gauge is oil filled with the white face. It
also comes in oil black face and air filled in both colors.
I wanted oil for what I believe is better accuracy and
longer life installed in a Harley Davidson M8 engine.
I wanted the white face as it provides easier viewing
of a black needle against a white background. This
gauge is accurate to within 1% and the gauge reads
from 0-400 degrees Fahrenheit.

This is a quality gauge assembly, from the screw
in adapters to the gauge holder assembly and it's
Made in the USA. Attention to detail in the true
manufacturing process is quickly evident. This
gauge assembly isn't cheap, but quality costs, and
who wants "cheap" installed on their very expensive
Harley Davidson engine. JES Custom Accents makes
a variety of gauges to fix a variety of HD engines through
a variety of production years.
784809
784810
784811
784812
784813
784814


The gauge face measures 1 1/2 inches in diameter
and the entire gauge with it's show chrome case
measures 1 3/4 inches across. The outer ring of the
gauge is knurled for better grip and appearance. The
entire gauge in length (gauge and temperature probe)
measures 7 3/4 inches in length. The temperature
probe length matches the OEM dipstick length..

The proper LOW and FULL marks are inscribed on
the probe for easy reading. To read the oil level, you
simply use two thumbs and push up on the gauge
case and the gauge and probe slides up and out to read.

Installation was straight forward and instructions are
easy to follow. But make sure you read the instructions!

I change my own fluids, but if I was going to have a
shop do it, I would remove this gauge and put the
OEM cap and dipstick back in. You don't want someone
not familiar with this gauge using tools to get it out.
Having said that, why aren't you changing your own fluids?

I found Joseph Stewart, the owner of JES Custom Accents,
to be extremely customer service oriented. He quickly
answered my questions by txt very fast. I ordered this
gauge from his website and it was literally in my hands
in 3 days!

I highly recommend Joe of JES Customs to anyone looking
for a quality temperature instrument to put on their Harley
motorcycle and just as important, the service from the owner
to back it up. KUDOs.
 

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old scoot coot
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3,592 Posts
even dino does not boil and start breaking down till 260 degrees. etmis will kick in at stop lights in at 80 degrees ambient temp. just run synthetic oil and don't worry.
 
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