Engine oil temps
Cruiser
Joined: Dec 2007
Posts: 143
Likes: 0
RE: Engine oil temps
I also just installed an HD oil temp gage and I also use 20W 50W Amsoil. I have not had a chance to ride due to the weather but should this weekend and will post my results. I did run it some in the shop and the gage did not move above 100 deg. F. I checked the oil Temp with a meat thermometer and it was at 110 deg F. There is not enough sensitivity in the HD gage to see if it was 100 or 110.
Tourer
Joined: Jun 2007
Posts: 279
Likes: 3
From: N. Alabama
RE: Engine oil temps
I put a HD oil temp guage on my 07 ultra in April. \\; Sending unit was in the HD adapter for an oil cooler. \\; At 3000 rpm in 6th gear going down I-65 to the \\;Redeneck Riviera \\;oil temp was 210 dg F in 75 dg F air temp. \\; Now with temp sending unit in oil line from \\; adapter to cooler oil temp has never registered off the bottom @ 110 dg F. Even running hard in 90 dg F + air temp. The 180 Dg F thermostat \\;in the adapter has not opened except in traffic or at long times of idle. \\; I am now moving the sensor to the oil pan. \\; This will eliminate the extra plumbing in the oil cooler line as well not being dependent on the thermostat being open for a temp reading. \\; My friend put an oil temp guage on his 08 ultra yesterday ( sensor in pan) and it was running 240 on I -65 at 70 mph. \\; Oil temp below 360 dg F should not hurt the oil or the engine. \\; I have a IR thermometer and will be checking cylinder head temps, \\; which I doubt are over 300 f max.
Stage II
Joined: Sep 2018
Posts: 2
Likes: 0
From: CA
Oil temp
 \\;I ride an '02 Ultra. I just installed an oil temp gauge to replace the air temp gauge. My question is am I getting accurate temp readings. I installed the sender in the extra hole on the front of the oil pan. I am running Amsoil 20w50. The oil temps run between 180' and 220'. I was riding in Arizona with 107' air temp and the max oil temp was 235'. Now while these seem ok, whenever the air temp would drop or we ran through some cold rain, the temp would drop to as low as 160'. Do these numbers sound normal or am I getting inaccurate reading?
Road Captain
Joined: Jun 2012
Posts: 574
Likes: 156
From: Big Sky Country
I had the same question as you after I installed my oil temp gauge (in the pan). It seemed to run cooler than I thought it would. I have an oil temp dip stick that I used to check how similar the temp readings would be and the dip stick showed about 10 degrees hotter. \\;I will have to put the dip stick in some boiling water some day just to see if it reads 212 at the boiling point. I agree with what the pingman said though that you should not let it worry you too much. \\;Use it for what is normal for your riding and if you see a spike in the temp one day then you can show some concern.
Cruiser
Joined: Apr 2007
Posts: 234
Likes: 27
From: Hamilton,Ontario
I've always had a temp stick. At first it usually ran hottest at about 210-215. When I had close to 60k on it i had the cam tensioners done with the screaming eagle oil pump.
Then hottest it was running 225, I'd look into the oil tank and the oil was bumbly something I'd never seen before
Thinking it was running hot I took it to a tech he laughed told me throw that oil stick away don't worry about it. The oil pump is getting the oil to the res faster hence bumbles and a higher temp.
Then hottest it was running 225, I'd look into the oil tank and the oil was bumbly something I'd never seen before
Thinking it was running hot I took it to a tech he laughed told me throw that oil stick away don't worry about it. The oil pump is getting the oil to the res faster hence bumbles and a higher temp.
Outstanding HDF Member
Joined: Dec 2012
Posts: 2,557
Likes: 235
From: Texas
I have an oil cooler and recently installed the oil temp kit in the oil pan and changed to Amisoil 20W-50 and my readings are pretty much the same. After a recent hard run on a hot day with some heavy traffic involved it, was indicating around 220ş on the indicator when I rolled into the garage. A digital thermometer stuck in the oil filler indicated 220ş This engine typically runs around 170ş to 200ş indicated.
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