EXP Synthetic Ester Blend 4T Engine Oil. For over 75 years, Bel-Ray products have proven their value, setting the highest standards of quality and performance. To achieve our quality aims and to ensure the consistency of our products, we use only premium materials from well known manufacturers: steel from Toyota Tsusho and NKK Japan, glue from Henkel Germany, filter paper from Ahlstrom Filtration Finland, Hollingsworth & Vose USA and Awa Paper Japan.
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