Has nothing to do with the HP, and depends entirely on engine make and model.
50:1
it needs to be revved its probably loading up if it is blue smoke oil its supposed to do that thats the oil and gas mixture
If its a two stroke then it just needs some 2 cycle engine oil
You did not specify what year, a 08 KTM 65 SX requires .5L 2002 sx65 to a 2008 sx65 according to my service manual only uses 300ml of gearbox oil. 2009 to 2011 uses 500ml of gearbox oil.
Better than speculation, pressure wash the engine so that it's really clean, then run it briefly at speed and see where the oil is comming from. If you get too much oil on the engine to find the origin, do it all again and run it for a shorter time. Finding WHERE the oil is leaking is more important than knowing that it shows up during high speed operation.
The recommended fuel/oil ratio for a 1972 model 65hp mercury is 50:1, roughly six gallons of fuel to one pint of2 cycle oil.
225 slant six engine? Could be a leaky oil pressure sending unit located just below the oil filter.
Start the bike up and let the oil warm up (side of the cylinder should be pretty warm to touch) before killing engine. Remove drain plug (on bottom of engine) and let all oil run out. Replace drain plug and remove filler plug on side of cases and add oil.
what oil is used in a ktm 65
Cylinder Numbering Distributor Rotation Rotor Under Cap Spins: Clockwise Torque Specs always torque bolts in three equal increments Bolts or Parts Lube or Sealer Torque to: 7/16 Main Caps (2 bolt) Engine Oil 70 ft-lbs. 7/16 Inner Main Caps (4 bolt) Engine Oil 70 ft-lbs. 7/16 Outer Main Caps (4 bolt) Engine Oil 65 ft-lbs. 3/8 Outer Main Caps (4 bolt) Engine Oil 40 ft-lbs. 3/8 Connecting Rod Engine Oil 45 ft-lbs. 11/32 Connecting Rod Engine Oil 45 ft-lbs. Cylinder Heads Engine oil (blind hole) Sealer (water jacket) 65 ft-lbs. Rocker Studs (screw-in) Engine Oil 50 ft-lbs. Oil Pump Engine Oil 65 ft-lbs. Oil Pan Engine Oil 12 ft-lbs. Cam Sprocket (upper gear) Thread Locker 20 ft-lbs. Timing Cover Engine Oil 6 ft-lbs. Intake Manifold (Cast Iron Heads) Non- Hardening Sealer 30 ft-lbs. Valve Cover Engine Oil 3 ft-lbs. Exhaust Manifold Anti-Seize Lubricant 25 ft-lbs. Spark Plugs No Lube or Sealer 20 ft-lbs. Flexplate (Automatic) Flywheel (Clutch) Thread Locker 60 ft-lbs. Clutch Pressure Plate Thread Locker 35 ft-lbs. Centerbolt (Harmonic Damper) Engine Oil 60 ft-lbs. Bellhousing (Transmission to Block) Engine Oil 25 ft-lbs. Head Bolt Tightening Sequence
Torque Specs always torque bolts in three equal increments Bolts or Parts Lube or Sealer Torque to: 7/16 Main Caps (2 bolt) Engine Oil 70 ft-lbs. 7/16 Inner Main Caps (4 bolt) Engine Oil 70 ft-lbs. 7/16 Outer Main Caps (4 bolt) Engine Oil 65 ft-lbs. 3/8 Outer Main Caps (4 bolt) Engine Oil 40 ft-lbs. 3/8 Connecting Rod Engine Oil 45 ft-lbs. 11/32 Connecting Rod Engine Oil 45 ft-lbs. Cylinder Heads Engine oil (blind hole) Sealer (water jacket) 65 ft-lbs. Rocker Studs (screw-in) Engine Oil 50 ft-lbs. Oil Pump Engine Oil 65 ft-lbs. Oil Pan Engine Oil 12 ft-lbs. Cam Sprocket (upper gear) Thread Locker 20 ft-lbs. Timing Cover Engine Oil 6 ft-lbs. Intake Manifold (Cast Iron Heads) Non- Hardening Sealer 30 ft-lbs. Valve Cover Engine Oil 3 ft-lbs. Exhaust Manifold Anti-Seize Lubricant 25 ft-lbs. Spark Plugs No Lube or Sealer 20 ft-lbs. Flexplate (Automatic) Flywheel (Clutch) Thread Locker 60 ft-lbs. Clutch Pressure Plate Thread Locker 35 ft-lbs. Centerbolt (Harmonic Damper) Engine Oil 60 ft-lbs. Bellhousing (Transmission to Block) Engine Oil 25 ft-lbs.
Check with dealer about the range of the oil pump psi. I have a 98 ram with 360 engine. 370,000 miles and that is normal for my engine. The pressure is lower at idle b/c the engine needs less pressure to keep the engine properly lubricated.