Hi Anthony, I'm glad to assist you. The usual percentage mix of coolant and water is 50/50. The coolant is mixed with water in equal parts. This mix ratio works well in most climates and provides good protection against freezing and boiling. This brand is currently out of stock. Click the link below to buy one of our best-buy brands. Happy shopping! https://www.carparts.com/coolant-antifreeze/recochem/rch86104oem?&vehicle[cylinders]=4&vehicle[liter]=2%2E0&vehicle[submodel]=Base&vehicle[model]=328i&vehicle[make]=BMW&vehicle[year]=2013&can=cpje1043_CSQA_20230909

Hi Karen, I'm glad to assist you. It is an Ethylene Glycol-Based coolant. It is often used in antifreeze/coolants for automotive engines. It has excellent heat transfer properties, making it an efficient coolant for dissipating engine heat. It has no methanol. It has a low freezing point and a high boiling point, making it effective in preventing engine coolant from freezing in cold temperatures and boiling in hot conditions. It is safe! Grab our best price and click the link below to buy it today. Happy shopping! https://www.carparts.com/coolant-antifreeze/recochem/rch86374groem?can=cpje1043_CSQA_20230803

Hi Dee, I'm glad to help you out. Yes, this item is phosphate-enhanced for Asian vehicles. This item is compatible with other similarly formulated HOAT/OAT coolants. Take advantage of our 30-day price match guarantee. Click this link to order this part: https://www.carparts.com/coolant-antifreeze/recochem/rch86374groem?can=CPAP3648 I hope this helps. Happy shopping.