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Using a Low Ash Engine Oil in a Lexus
Can I use Mobil 1 ESP Formula 5W-30 instead of Mobil 1 5W-30? I have Lexus RX 350 2009 (no warranty). If I use Mobil 1 ESP Formula 5W-30 will something happen?
-- Ton Wenga, Chicago, IL
Specifically targeted for diesel engines, Mobil 1™ ESP Formula 5W-30 synthetic oil does carry several key OEM/industry approvals in gasoline engines including those from Porsche, BMW, and the Industry group ACEA. While this engine oil was not specifically designed to meet the performance requirements of ILSAC GF-4 (recommended in the Lexus RX350 owner’s manual), this list of approvals suggests that Mobil 1 ESP Formula 5W-30 is applicable for use in gasoline engines. We would not expect a performance issue if Mobil 1 ESP Formula 5W-30 synthetic motor oil was used.