Hello Dave, Auto-Rx works well in 4 cylinder motorcyles. Believe you use light viscosity oil
(ISO 32). Auto-Rx works on ratio's; one ounce of Auto-Rx to each quart of bikes host oil is correct. Application Instructions (mileage with Auto-Rx in your engine oil) are the same as found on www.auto-rx for bikes under 100,000 miles and bikes over 100,000 miles. Auto-Rx works very well with wet clutch technology. Thanks for the question.
(ISO 32). Auto-Rx works on ratio's; one ounce of Auto-Rx to each quart of bikes host oil is correct. Application Instructions (mileage with Auto-Rx in your engine oil) are the same as found on www.auto-rx for bikes under 100,000 miles and bikes over 100,000 miles. Auto-Rx works very well with wet clutch technology. Thanks for the question.