My new to me '05 Evinrude 175's came with water pressure and water temp gauges, no oil tank gauges. I'm thinking of keeping the oil tank gauges and eliminating the water temperature gauges.
Any opinions?
My new to me '05 Evinrude 175's came with water pressure and water temp gauges, no oil tank gauges. I'm thinking of keeping the oil tank gauges and eliminating the water temperature gauges.
Any opinions?
What type of gauges? Analog, digital??? Pictures would be helpful.
The oil tank has a low oil sensor that is triggered at 25% remaining and illuminates a ‘Low oil’ warning light in a system check gauge / tachometer.
If an oil level gauge is really desired it requires installing a fluid level sensor in the tank, running wires forward and installing the gauge. The fluid level sensor needs a 2in hole drilled into the plastic tank. Experts recommend pulling the tanks and draining the oil to catch and ensure proper cleanup of the plastic drilling chips.
Last edited by Bighare2; 11-28-2021 at 05:36 PM.
Gauges are analog, see pic.
My last engines didn't include the system check gauges.
I assumed the sender in the oil tanks were similar to the sender in the fuel tanks,,,,,that could be used by a gauge similar to a fuel gauge (I have from my previous engines),
I understood that there was a low oil light on the system check gauge and thought it was driven by the same sender that I could use for the gauge.
Not sure if I'm interested in the temp gauge..........kinda got used to not having one and monitoring the water pressure gauge.
The engine temp gauge is a simple reference temp number. It’s is not that accurate due to the type of sender. Water pressure is always the better early warning monitor.
What model were your old motors? If they were pre- 1996 you'll need to change them to the MWS tanks. You may want to consider the system check Tach you'll gave our tach and the 4 LED lights. Low Oil, No Oil, Check Engine and over temp. That would be a plug and play if you have the MWS harness.
20211127_144310_resized.jpg
My old engines were '95's so yes, I am changing out the tanks, As you can see in the pic (made a new dash) the system check gauge is separate.
I need to check the sender in the oil tank to see if it will support a gauge. Think I'd rather have a oil tank gauge than a temp gauge.
^^^This!^^^Originally Posted by Bighare2
FWIW, I monitor my oil supply by knowing how many gallons I've refilled ... even though a quick look at the tank works too...
"Life's too short for an ugly boat!"
1985 totally refurbished Pro-Line 21A Cuddy - 175hp Evinrude FFI
You'll have to use the analog connection on the tach. The oil tank level sensor will be a hard item to find.
The oil tank oil warning is not a sensor. It is a simple on/off contact switch. A small float is positioned to contact a ground circuit to trigger a low oil alarm at the 25% level. This cannot support a gauge as you desire.
My post number 2 describes what you need to do to install an oil level gauge.
see this post for other details and pictures. http://www.bbcboards.net/showthread.php?t=1154129
Thanks, that's exactly what I would like to do. I really can't monitor the level by looking at the tanks due to where they are located. My '95's have oil tank level gauges so I assume they have sensors/senders, will need to check as I have to swap them out with the tanks w/ the returns. If they do have the senders hopefully I can swap them into the "new" tanks.
Just thinking, if my other tanks don't have senders, would a fuel tank sender work?
Like this:
https://www.amazon.com/Sending-Marin...2s9dHJ1ZQ&th=1
Last edited by ajv00303; 11-30-2021 at 07:46 AM.
This is the float for the oil tank keep in mind the tank is only 1.8 Gallons.
https://www.marineengine.com/parts/j...0916&sid=59055
++ to championman.
the one from your link will work also. You do need to measure the oil tank depth to ensure you get the proper length for a 1.8 gal tank or a 3 gallon tank. Note: fuel tank sender or oil tank sender - they are the same.
I removed the pick-up from the oil tank last night to get a better look at the "low oil" contact. I can't believe the technology used (should have taken a pic!).
The contact is intermittent to say the least, I'm going to try to clean it. Even more reason I want a gauge now.
Yup and intermittent it will always be. This is the nature of any float moving around in a fluid, sloshing around in a tank, in a boat bouncing around in the waves and wakes. Movement keep the contacts clean and oil keeps it lubricated. The low oil warning system in the gauge as built in buffers to eliminate inconsistent contact signals for sloshing as the oil level creeps down to to the 25% level. The simplicity of the mechanism has worked to its design intent since 1984.
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