Best way to read oil dipstick?

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Best way to read oil dipstick?

Postby Kikaboo » Wed Jul 11, 2018 7:18 pm

When I check my oil dipstick on either engine on my 32Exp, I usually have a hard time reading it.
When the boat sits for a few days if I pull out the stick it shows almost full. The entire stick above the full line is dry and it shows oil close to the full line. If I then wipe the stick and put it fully in then pull it out, it seems to show 3/4 or something less than full but it’s kinda of hard to read. There is no clear oil top line.

See two pics. Not sure if it will show up or not
3FDCE9FE-D83C-4FAA-8095-FBD3E7CD7CC6.jpeg

6BF336D0-45E3-4865-B9D6-472EDB7B5B11.jpeg
Rob
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Re: Best way to read oil dipstick?

Postby SGilbert » Wed Jul 11, 2018 9:20 pm

Meaningless the way you're doing it. Warm up the engine first, shut down, pull & wipe the stick. THEN pull & check oil level.
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Re: Best way to read oil dipstick?

Postby Rpontual » Wed Jul 11, 2018 10:22 pm

I measure the oil level with engine cold, this way all oil is settled.
You need to pull & wipe the stick, then pull it again to read oil level.
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Re: Best way to read oil dipstick?

Postby Kikaboo » Thu Jul 12, 2018 5:02 pm

According to my Merc manual, the engine should be warm, not hot. Dipstick should be wiped down and fully inserted with hash marks facing rear of engine ( where the flywheel is). Stick should be left in place for 60 seconds before pulling it out and checking level. I’m gonna try this technique and see if I get better results.
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Re: Best way to read oil dipstick?

Postby gofast24 » Fri Jul 13, 2018 10:33 am

Rpontual wrote:I measure the oil level with engine cold, this way all oil is settled.
You need to pull & wipe the stick, then pull it again to read oil level.

Agree, let all the oil settle into the oil pan (cold and not run for several hours or over a weekend or so minimum), pull dip stick, dry it off well with a paper towel or clean rag, . When the oil gets used it will be easier to read as the oil will start to get brown or light black. You can also try a old trick and lightly sand/rough up the area that indicates the oil level on the stick. Just make sure you clean it off well before re inserting into the oil pan. Also, once pulling it out make sure the dip stick is immediately turned to a level (horizontal position) so any oil on the stick doesn't flow up or down the stick.
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Re: Best way to read oil dipstick?

Postby gofast24 » Sun Jul 15, 2018 11:14 am

SGilbert wrote:Meaningless the way you're doing it. Warm up the engine first, shut down, pull & wipe the stick. THEN pull & check oil level.

My thoughts = The OP is doing it the correct way, that is the way I have doing it for about 40 years. Hot or cold oil doesn't effect the dip stick reading, just let the oil flow back to the oil pan to see the actual full sump level, never over fill the oil. Again , best way it to check it is prior to starting the engines before going to sea.
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