Hi Paul. For adding to your Harley’s oil you’ll want to use Sea Foam Motor Treatment. Instructions are 1 ounce per quart of oil and add at least 100 miles before replacing the oil. IC5 Fuel Injector Cleaner will NOT be helpful in oil (for use in fuel only). IC5 does not have any oil cleaning characteristics.
Hi Paul. For adding to your Harley’s oil you’ll want to use Sea Foam Motor Treatment. Instructions are 1 ounce per quart of oil and add at least 100 miles before replacing the oil. IC5 Fuel Injector Cleaner will NOT be helpful in oil (for use in fuel only). IC5 does not have any oil cleaning characteristics.