oylee1 Posted October 22, 2014 Report Share Posted October 22, 2014 Hi just purchased a gas gas txt 250 2006 model, and I am changing the gear box oil, I went to my local bike shop and he gave me jmc getriebeöl 75w90 hc synthetic oil, is this ok to use ? Thanks lee Quote Link to comment Share on other sites More sharing options...
richt Posted October 22, 2014 Report Share Posted October 22, 2014 75w90 seems too viscous. Most people are using Automatic Transmission Fluid (ATF Dexron III) and it's also recommended by GasGas. Quote Link to comment Share on other sites More sharing options...
baldilocks Posted October 22, 2014 Report Share Posted October 22, 2014 Atf or putoline light gear oil Quote Link to comment Share on other sites More sharing options...
dadof2 Posted October 22, 2014 Report Share Posted October 22, 2014 Gasgas manuals recommend, 10w30, 10w40 or SAE75W. 75W90 is too viscous (thick) Some people use ATF but really it is too low viscosity (thin) There are also different types / grades of ATF so when someone advises ATF how do you know which one? Quote Link to comment Share on other sites More sharing options...
dadof2 Posted October 22, 2014 Report Share Posted October 22, 2014 (edited) http://www.gasgasmotos.es/en/manuals/5.html file:///C:/Users/User/Downloads/2006_txtpro_manual_en%20(1).pdf See above for future reference, Page 10 or 11 for gearbox oil 10w40 SF or SG. I think mineral or semi synthetic will meet SF and SG specs easily enough, don't buy oil without these API classifications as it is possibly crap. Edited October 22, 2014 by dadof2 Quote Link to comment Share on other sites More sharing options...
crazybond700 Posted October 22, 2014 Report Share Posted October 22, 2014 Well, it also states to run 1:50 2stroke mixed gas... Quote Link to comment Share on other sites More sharing options...
richt Posted October 23, 2014 Report Share Posted October 23, 2014 (edited) I read the book and learnt the hard way as there are many mistakes in them, 50:1 not a hope in hell 70:1 works for mine. Also the book states 550ml of oil in the gearbox, Has anybody managed to get that much in?? GasGas technical bulletin. http://www.trialspartsusa.com/diagrams/Pro_Technical_Bulletin_USA_July_22_2013.doc Edited October 23, 2014 by richt Quote Link to comment Share on other sites More sharing options...
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