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Engine Oil - I need some help here

BK
Benno Klopfer
Sun, Dec 27, 2009 12:21 AM

All the way from Mar del Plata, Arg. on to St. Thomas, VI, this problem has
been pestering me and I have not come up with an answer.  Before starting out
from St. Thomas in Jan. 2008, I bought a carton of Texaco URSA Super Plus
15W40 engine oil and a few gallon containers of the same.  Over a period of
continuous motoring, example: 72 hrs non-stop, I came to a conclusion that my
Perkins M80T diesel engine was burning 180 ml in 24 hours.  I prepacked a
couple of empty Evinrude/Johnson 2 cycle outboard engine oil containers which
could hold 14 oz or 450 ml oil and having a measuring scale on the bottle with
180 ml URSA 15W40 engine oil.  At 12:00 hr every day, I would add the contents
of one of these containers into the engine.  This worked fine until around the
Horn and up to Mar del Plata, Arg. where I ran out on Texaco URSA oil.  I was
not able to get any Texaco URSA there, but right in front of the yacht club in
Mar del Plata was a big Shell gas
station which supplied us with enough Shell Rimula 15W40 to get us to Grenada
and beyond.
However, I discovered very quickly, that the engine was burning
more Rimula oil than the previous URSA.  As a matter of fact, it burned in 24
hours 360 ml oil.  Exactly double the amount.  Why?  I still haven't found the
answer.
Anybody any idea?
Benno on "Diesel Duck"

All the way from Mar del Plata, Arg. on to St. Thomas, VI, this problem has been pestering me and I have not come up with an answer. Before starting out from St. Thomas in Jan. 2008, I bought a carton of Texaco URSA Super Plus 15W40 engine oil and a few gallon containers of the same. Over a period of continuous motoring, example: 72 hrs non-stop, I came to a conclusion that my Perkins M80T diesel engine was burning 180 ml in 24 hours. I prepacked a couple of empty Evinrude/Johnson 2 cycle outboard engine oil containers which could hold 14 oz or 450 ml oil and having a measuring scale on the bottle with 180 ml URSA 15W40 engine oil. At 12:00 hr every day, I would add the contents of one of these containers into the engine. This worked fine until around the Horn and up to Mar del Plata, Arg. where I ran out on Texaco URSA oil. I was not able to get any Texaco URSA there, but right in front of the yacht club in Mar del Plata was a big Shell gas station which supplied us with enough Shell Rimula 15W40 to get us to Grenada and beyond. However, I discovered very quickly, that the engine was burning more Rimula oil than the previous URSA. As a matter of fact, it burned in 24 hours 360 ml oil. Exactly double the amount. Why? I still haven't found the answer. Anybody any idea? Benno on "Diesel Duck"