Page 4th Cover: of Maritime Reporter Magazine (October 15, 1971)

9 tick,tock,tick, tock,tick,tock, tick,tock,tick tock,tick,tock tick.tock.t ck tock.tick.tock tick.tock.t ? t f f ck. f

When you switch to Mobilgard 445, it's a lot longer between changes.

Mobilgard® 445 is making everybody involved with marine engines happy—except maybe filter manufacturers. Specifically designed for medium-speed diesels in tow- boat service, Mobilgard 445 has stretched oil filter life to the maximum allowed by current filter materials.

And that's not all. In repeated tests,

Mobilgard 445 has completely eliminated the need to clean oil coolers between major overhauls. And overhaul intervals themselves can be extended by months.

Finally, Mobilgard 445 doesn't need to be drained between overhauls—and tests show that it keeps the engine cleaner than competitive oils that are drained regularly.

And as you know from your own experience, cleaner engines last longer—a lot longer.

Mobil Oil Corporation, 150 E. 42nd Street,

New York, N.Y. 10017. mm a •• Mobil

Marine Fuels • Marine Lubricants

Worldwide Marine Service