guys, just changed oil my d-max last week... and i used a fully synthetic oil by MANN HUMMEL, 10w40 grade SL/CF grade... pwede gasoline or diesel.. hehehe... and nagbyahe kami last sunday.. very smooth and very responsive the engine, the negine doesnt sound its tryuing hard to pull the truck to 100km/hr... meron din multigrade na oil with 15w40 and almost the same lang ang content and cheaper... hehehe... MANN hummel is used by mercedes also, kc mga filter ng benz namin mga MANN HUMMEL kc... and also used by other european models... kung u want prices so oil na e2 just PM me.. hehehehe....

as for the tranny concerm nyo... usually its the clutch pressure...