For oil injection systems ,For outboard water cooled & air cooled 2-cycle engines including those calling for 100:1 fuel to oil ratio & all air cooled 2-cycle engines requiring an NMMA TC-W TC-W11 or TC-W3 ,Exceeds requirement of water cooled outboards and air cooled engines at heavy loads and high speeds for long periods ,Exceeds all OEM requirements ,TC-W3 ,Pt.