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make sure you pre-fill the filter before fitting to make things a lot easier

Tengo un Mazda CX7 diesel del 2012 y yo mismo he cambiado este filtro. El cambio es muy fácil y solo hay que tener la precaución de que antes de montarlo y roscarlo, llenarlo de gasoil hasta el borde para que cuando vayamos a arrancar, pueda hacerlo casi de inmediato.

There are many YT videos on how to fit these on a Skyactiv diesel. And the process seems quite convoluted. On mine, a left-hand drive, it was actually pretty straightforward. The diesel filter does sit in a rather tight spot in the corner of the engine bay, on the passenger side, so no need to remove the battery. I was able to unscrew the filter by hand but had to undo the bracket in order to wriggle out the filter. I expected a whole lot of spillage as the filter came out sideways but the filter was only half full. The job could have been a lot easier by removing one of the two thick rubber hoses which are located on the lower side of the fuel filter, fastened with a clamp, but as I have no idea what these are for, I left them in place. It turns out these are for the heating of the inside cabin. I filled the filter to the brim and screwed it back on, but car didn't start on first attempt. It took three tries. I am now kicking myself for not bleeding the fuel lines. BTW, the old filter was not even screwed on hand-tight, but finger-tight by Mazda. I screwed mine on hand tight just to be on the safe side. No leaks. Also, the old Mazda filter looked as good as new on the inside after 45,000KM. The service interval for this part is 60,000KM, but maybe this should be shortened as most diesel cars have a fuel replacement interval of 30,000KM. As in my case the job is a lot easier than anticipated I wouldn't mind changing my diesel filter every 30,000KM.

Ok