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| Oil volume in Gray Marine Six -104 : ... |
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Michael Angell
New member
Username: mgangell
Post Number: 1
Registered: 10-2019
| | Posted on Friday, October 11, 2019 - 09:51 pm: | 
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Hello - I have just performed my first oil change on my Graymarine Phantom Six - 104. The previous two changes were done by an engine restoration service and then by a boat restorer. The specs (Gray Marine manual) indicate an oil volume of 9 quarts for this engine. The oil dipstick reads a little over full after only 5 quarts. In addition, the running engine oil pressure is ~40 also on only 4.5-5 qts. When asked, the boat restorer indicated they likely only put in 4-6 quarts when the engine was winterized last year. As a result, I was only able to remove about 4-5 quarts when the engine was warm.
What is going on here? Either 4 quarts of oil are hiding somewhere or the engine appears to be full on only 5. Anyone else have this issue? Does anyone have a picture of their Six-104 dipstick to see if someone changed mine (although very unlikely)? I don't want to stuff 9 quarts of oil into the engine if the indicators say its already full. |
Bruce Hall
Senior Member
Username: bruce
Post Number: 687
Registered: 07-2002
| | Posted on Saturday, October 12, 2019 - 02:51 pm: |
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From what location are you removing the oil? Are you removing the transmission cover to suck out the oil? |
Ned Lloyd
Senior Member
Username: ned_l
Post Number: 198
Registered: 08-2012
| | Posted on Friday, November 01, 2019 - 12:24 pm: |
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Hmm, .... Gray flat head six, about 226 CID. Nine quarts is about right (goes into the reverse gear also). |
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