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Appropriate 40 Grade Motor Oil for VW TDI Engines
 
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Question:
Appropriate 40 Grade Motor Oil for VW TDI Engines
I would like to know if 0W-40 should be used instead of Mobil 1™ Turbo Diesel Truck 5W-40 for earlier VW TDI engines('98-'03). I am curious because 0W-40 carries VW approval for 505.00, and 5W-40 turbo diesel truck is not labeled as such. Can either one be used?
-- Brad Haney, Arcanum, OH
Answer:
Aside from the 1998 Beetle TDI which called for an API CD certified oil, Volkswagen requires that oils for its vehicles meet one of VW’s officially approved standards (e.g. VW 505.00). Mobil 1™ 0W-40 and Mobil 1™ 5W-50 both carry this VW Approval.
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