GS300dude Posted October 11, 2009 Share Posted October 11, 2009 I got a 99 GS300 w/ 133000 miles and use 5w-30 Mobil 1 high milage oil w/ mobil 1 oil filter. I was thinking maybe I should switch to 10w-30. What about you guys? :) Quote Link to comment Share on other sites More sharing options...
sakataj Posted October 12, 2009 Share Posted October 12, 2009 I got a 99 GS300 w/ 133000 miles and use 5w-30 Mobil 1 high milage oil w/ mobil 1 oil filter. I was thinking maybe I should switch to 10w-30. What about you guys? :) if your motor calls for 5w-30 run, 5w-30. y would u wanna change? i actually used to run 10w-30 mobil 1 on my gs but went back to 5w-30 on MY gs recently. yes, i had a reason for this too btw but its not worth it Quote Link to comment Share on other sites More sharing options...
GS300dude Posted October 13, 2009 Author Share Posted October 13, 2009 I got a 99 GS300 w/ 133000 miles and use 5w-30 Mobil 1 high milage oil w/ mobil 1 oil filter. I was thinking maybe I should switch to 10w-30. What about you guys? :) if your motor calls for 5w-30 run, 5w-30. y would u wanna change? i actually used to run 10w-30 mobil 1 on my gs but went back to 5w-30 on MY gs recently. yes, i had a reason for this too btw but its not worth it hmmm whats not worth it? Quote Link to comment Share on other sites More sharing options...
nc211 Posted October 13, 2009 Share Posted October 13, 2009 follow the car manual's rec's to avoid problems and enjoy the best performance of the car. Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted October 15, 2009 Share Posted October 15, 2009 I got a 99 GS300 w/ 133000 miles and use 5w-30 Mobil 1 high milage oil w/ mobil 1 oil filter. I was thinking maybe I should switch to 10w-30. What about you guys? :) Here's the info you need: owners manual - http://us.lexusownersclub.com/forums/index...st&p=167930 service manual - http://us.lexusownersclub.com/forums/index...st&p=389508 Quote Link to comment Share on other sites More sharing options...
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