Red Line 5W40 Synthetic Motor Oil is specified for many Audi, BMW, Mercedes Benz, Porsche and VW applications * Thicker oil film at operating temperature than a petroleum 5W40 or 10W40 * Additional additive package for diesel passenger cars and trucks (API CJ-4) * Recommended for API SM/CJ-4/CI-4/CI-4 PLUS * Also recommended for ACEA A3/B4/E9 * Popular in turbocharged applications