The Lexus Kid Posted August 1, 2017 Share Posted August 1, 2017 I have a 2010 GS 350 and the Lexus Dealership use Conventional Motor Oil but I was thinking of using Synthetic any inputs ? Quote Link to comment Share on other sites More sharing options...
pj8708 Posted August 2, 2017 Share Posted August 2, 2017 Hi Keith. Either is fine in the 2010. With my ES 2010 the dealer used a blend of regular and synthetic. In newer models, Lexus is specifying synthetic only. Paul Quote Link to comment Share on other sites More sharing options...
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