GEKKO GTO 22, Owner'S Manual

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maximize engine life, change oil and filter after every 50 hours of use (see engine
manual).
Crankcase oil should be selected to deliver the highest performance for your operating
conditions and climate. In general, engine oils with lower viscosity ratings are used
when temperatures remain low or when better fuel economy is desired. Oils with
higher viscosity ratings are used when temperatures remain higher and when higher
performance is expected from the engine.
The Engine Manufacturer recommends 15W-40 Marine Motor Oil. If this is
unavailable, a high grade with an A.P.I. classification of SH, SJ, SG/CD is acceptable.
IMPORTANT
REFER TO ENGINE MANUAL for more information.
Direct Drive Transmission Level Check TOP
Velvet Drive Transmission Dipstick