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Old 17-10-2016   #1
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Question HELP PLEASE doblo 1.6 auto gearbox issues

Hi all, am new here and need some good advice !
i have a 2011 doblo mpv 90hp with 31k its a dualogic automatic
my question is : gears change with no regularity , sometimes stays in 1st too long sometimes not, sometimes changes up or down too quickly . Seems to change slightly better in economy mode . Changing gears manually works perfectly . I have noticed it makes a slight clunk noise sometimes when selecting a gear , does this sound normal for this type of gearbox ? should i be looking at changing gearbox oil ? what oil do i use and do i put an additive like slick 50 in to try and help ? Any reply is welcome please , thankyou
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Last edited by Iain1671; 17-10-2016 at 21:16.
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