Deuce Oil Pressure?

Reply Subscribe

Thread Tools

Search this Thread

Apr 3, 2010 | 02:58 PM

HDeuce

Thread Starter

Advanced

Joined: Oct 2009

Posts: 51

Likes: 0

Deuce Oil Pressure?

I have a 05 Fuel Injected Deuce. I just changed the oil after the winter storage. I used 20W-50 Screaming Eagle synthetic oil and HD oil filter 63798-99A. When I went for a test drive I noticed my oil pressure seemed to drop from what I remember last year. It was about 20psi going down the road at 50mph and it would drop to 0 at idle. Last year i thought it was around 30psi on the highway. I just bought the bike so I don't know what filter was on the bike, but I know it was an after market filter. I have HD oil pressure gauge number 75133-99.

Anyone have problems with this gauge? I don't see why changing the oil would effect the oil pressure. Do any of you notice a decrease in oil pressure with the 5 micron filter?? How much oil pressure should I see at idle and going down the road at 55mph/2000rpm.

Here is a post when I questioned what oil filter to use.
https://www.hdforums.com/forum/softa...lter-help.html

Thanks,
HDeuce

Apr 4, 2010 | 07:59 PM

fattyboyy

Tourer

Joined: Apr 2009

Posts: 314

Likes: 1

From: Gaston sc

my gauge shows 30 to 35 psi on the highway and 10 to 15 at a stop if it is very hot day it is around 5psi at a stop light . with SE synthetic .

Apr 4, 2010 | 08:03 PM

AR-15 DEUCE

Road Master

Joined: Feb 2009

Posts: 809

Likes: 4

From: Oregon / AZ

Does the bike ride ok...get rid of the gage,and enjoy the ride,oil will effect the psi

Apr 4, 2010 | 08:52 PM

stmpulr

Cruiser

Joined: Jun 2008

Posts: 139

Likes: 0

From: USA

For what it is worth.
Many years ago my dad owned a Mobil gas station. They had just come out with Mobil 1 synthetic oil (am I dating myself yet). The Mobil rep was at the station and we were talking about the oil and one of the things I remember him saying was that the oil pressure will be slightly lower than with conventional oil because the synthetic oil flows more freely through the motor hence less oil pressure.
If you had a gauge on a garden hose and had the end of the hose wide open for max flow and no restriction you would have little to no pressure. Now put your finger over the end of the hose and restrict the flow and the pressure will rise. Something like that.
Just because there is little pressure it does not mean it is not lubricating.

I have always used Mobil 1 in all my vehicles inc. my bike. Mobil 1 V twin 20-50 with a HD filter.

As I said, for what it is worth.

Apr 4, 2010 | 08:57 PM

magnum629c

Outstanding HDF Member

Joined: Jun 2008

Posts: 2,374

Likes: 5

From: redbank new Jersey

stay away from crap filters if you can..I would not save 4 dollars to risk a 4000 dollar moter..Try changing the oil and filter see what happens made the gauge is broke

Apr 4, 2010 | 10:11 PM

HDeuce

Thread Starter

Advanced

Joined: Oct 2009

Posts: 51

Likes: 0

asdf

Quote:

Originally Posted by magnum629c

stay away from crap filters if you can..I would not save 4 dollars to risk a 4000 dollar moter..Try changing the oil and filter see what happens made the gauge is broke

I took it for a little longer ride today and the oil pressure was at about 28psi today going down the road. It went back down to 10psi at idle when I road for about 20 miles. I will have to keep an eye on it, I guess I was just wanting some input because I just finished changing my filter and oil and noticed a difference. I know it is circulating because the temperature gauge is going up and filter is getting warm.

Thanks,

Apr 5, 2010 | 06:02 AM

kiwifulla

Cruiser

Joined: Apr 2010

Posts: 202

Likes: 1

From: Brisbane, Australia

I had a oil pressure guage on my last 07 softail and on hot days when sitting at lights it would get down to 0 but i was told that the harley guage are not that accurate as i never had the light come on . as your oil gets older the pressure will also drop .