Oil Capacity for 5.0 V8? Depends on model year....

[rkilpa]

MCM 5.0L & EFI	GM	305/5.0L	V-8	1998 - 2002	OL012052 - 0M299999	5-1/2 US qt (5.2 L)
MCM 5.0L & MPI	GM	305/5.0L	V-8	2002 - 2016	0M300000 and up	4-1/2 US qt (4.25 L)

Was wondering why I couldn't get more than 4 1/2 quarts out of my engine before I was sucking air....when I was expecting 5 1/2 quarts. Bought a different extractor and got the same results on my 2nd change.

Also, I just assumed the 5.0 was a Ford block. I'm happier now because I've always been a GM guy.

Lots of good info here:
https://www.mercruiserparts.com/mercruiser-gas-engine-oil-capacity

 

[achris]

...Also, I just assumed the 5.0 was a Ford block....

The distributor being at the back of the engine wasn't a clue?

Merc haven't used a Ford engine since 1977. Although, parts of the '470' (1976 to 1989) were from a Ford 460 engine...

Chris.............

 

[aimlow]

Does the engine sit level in the boat, or is it a straight inboard and sits at a steep angle?

 

[GA_Boater]

4 1/2 qt. capacity doesn't change even if the motor is upside down. 4 1/2 out and 4 1/2 in.

 

[aimlow]

4 1/2 qt. capacity doesn't change even if the motor is upside down. 4 1/2 out and 4 1/2 in.

Not exactly. Motors which sit at a steep angle need to have the oil level below the rear main and below the back of the windage tray/rear crank throws. Motors which "use" a 1/2 qt. or so and then stop are frequently overfilled. The oil pump pick-up is always at the rear of the sump on a marine application, even on a Ford with the distributor/pump at the front.

 

[GA_Boater]

Oil pan. Think about it.

 

[aimlow]

Not exactly. Motors which sit at a steep angle need to have the oil level below the rear main and below the back of the windage tray/rear crank throws. Motors which "use" a 1/2 qt. or so and then stop are frequently overfilled. The oil pump pick-up is always at the rear of the sump on a marine application, even on a Ford with the distributor/pump at the front.

I've been there, done that. Several times. This ain't my first rodeo. "Full" on a dipstick is only "full" when the engine sits level. Recently, 2-302 Fords in a 24' Blackfin, straight inboard. Never ran the dipstick at "full. On those pans (came from a Ford van or something) quantity was close, but not exactly what "full" was in the manual.

I/O's usually sit pretty level, so the dipstick is usually accurate.