Oil Filler Cap

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afterglow	Oil Filler Cap		Lead	[-]
Posts: 56 03/10/08 13:11:49	Tags : None I just finished changing the oil and oil filter on my 1992 2-cabin Pullman. I refilled the engine oil on my Yanmar via the filler on the top of the engine block. Does anyone know why there is a second yellow filler cap, on the side of the engine that the oil filter is on? I checked the engine manual and all it says is "engine lube oil", the same as for the filler on the top of the block. I'm worried that there is a secondary sump of some sort.
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sashay567		#1	[url]	[-]
Posts: 201 03/10/08 13:39:23	Noticed the second cap too. I filled the engine via both caps and both caps increased the crankcase levels. That led me to think that Yanmar provided the second location in case access to the engine was not as good as what we are blessed with on our C-42s. Rodney Kidd, C-42 #567 Sashay, 2 Cabin Fin, Marina Village, Alameda, CA
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Bob VonDrachek	Optional access	#2	[url]	[-]
Posts: 22 03/10/08 16:56:16	I asked about that at a Yanmar dealer and they said it was optional access in case one or the other is not accessable. They both go to the same place so you can use whichever is most handy. Bob V
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azure42	Oil filler cap	#3	[url]	[-]
Posts: 328 03/12/08 06:25:07	On a semi-related question for the group, I'm curious what others do as per the dipstick when checking the engine's oil level? My dipstick has a rubber "collar" at the top that seals the opening when the stick is seated. If the dipstick isn't seated, approx. an inch of dipstick doesn't go down the tube. I seat the stick all the way home when checking the oil level, but I've heard of some checking by just pushing the stick down to rest on the rubber stop, then pulling it out to read the level. Anyone know which method provides the correct reading? Rod Williams Azure' #343, 2-cabin fin Alameda/San Francisco Bay, CA. Last Edited By: azure42 03/12/08 06:31:02. Edited 1 time.
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sailordan2	Oil weight	#4	[url]	[-]
Posts: 21 03/12/08 08:57:18	Would like to add another semi-related topic. Just got my C42 and am doing 1st season prep to it. What is recommended oil weight for the Yanmar 50? Sailor Dan SV Lydia Grace C42 #429
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afterglow	Dip Stick	#5	[url]	[-]
Posts: 56 03/12/08 09:27:12	Rod - I measure the oil level with the dip stick fully seated. I'm careful not to fill it to the upper limit because it takes a little while for the oil to flow down to the bottom of the engine after you add it to the top of the crankcase.
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afterglow	Oil Weight	#6	[url]	[-]
Posts: 56 03/12/08 09:30:42	Dan - I use 15W-40 up here in Puget Sound. The engine manual for my Yanmar has a little chart that shows recommended oil weights for different ambient air temperatures.
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sashay567		#7	[url]	[-]
Posts: 201 03/12/08 10:09:08	I am using 15W-40 here in SF Bay. Yanmar recommends this for the temperature ranges we have in the Bay. Rod, I also fully seat the oil dipstick. The transmission dipstick is measured "unscrewed". Perhaps that is where the confusion comes in. Rodney Kidd, C-42 #567 Sashay, 2 Cabin Fin, Marina Village, Alameda, CA
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daveandsheila	Engine Oil Level: A word of caution	#8	[url]	[-]
Posts: 12 03/14/08 06:17:38	When measuring oil level, I don't like to push the dipstick all the way down. Rather, let it sit on the lower edge of its seal, and add in the offset due to the seal. Reason: on some engines when you push the dipstick seal all the way down, you create air pressure in the tube that actually pushes some oil out of the lower part of the dipstick tube!!!....and, therefore get a false low reading. Try is both ways to make sure this isn't happening to you. There is some DANGER to overfilling many diesels with oil. You run the risk of "diesel run-away." Engine oil gets splashed up on the cylinder walls, then works its way past the cylinder into the combustion chamber and powers the diesel. The max rpm governor setting will not have any effect on slowing down the engine down and the engine will destroy itself. Dave Dave G, Catalina 42 MK-I/#120, Claddagh Chesapeake Bay, Chestertown MD, Tolchester Marina
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