[color=blue]Have done it without jacking car up, managed to undo sump plug and remove filter by driving the offside of car along the higher side of a kerb so that only the wheels are on the kerb, you may be working in gutter, but its the only way I can do it effectively, also helps in living in a cul-de-sac!! [/color]
[img]http://img.photobucket.com/albums/v687/Steve_Zodiac/7fbcadd3.jpg[/img]
[color=blue]Oil filter can be tricky to get to as the undertray is in the way, couple of nuts and clips holding at the front can be undone so you can gently push the tray out of the way (will still be attached at the side). Will's right, filter is situated between radiator and main engine block with a shroud around it with 2 small coolant hoses leading from shroud area, (these 2 hoses have to removed to drain out coolant by the way, a real real pain if you've got air-con!!)
I think that the filter is in a good place to get too, at the front of motor and nearly vertical downwards, being like this, its helpful to fill up new filter with fresh oil then mate it up to thread, oh, and use a Mazda filter, only around £8 and a fresh sump plug (35p?)
The oil is fine, though some owners of Mazda V6 engines have commented that friction and HLA noises have been eased by the usage of 10W40 mineral/semi synthetic oil.
I've used Castrol fully synthetic 0W-40 last two times with no problems, but then I have no trouble with HLA or fiction noises.

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