for me is nothing at first effect after tht same only, and i also sell b4 tht magnet this product out since 1990, so i install at my new proton knight about 1 yr spoil...the price is RM3xx, so tht i stop selling. but i try morey's, upper cyclinder lubricant for petrol tank, heavy duty for engine. every service i use helix super and add the morey's heavy duty, till now the engine is still smooth, i always drive my car frm kelantan to kl.
