Focus maintenance important and not so important

I'd check the Maintenance Schedule book that hopefully is in your glove box.

Amen to that, and for sure you should be thinking about the timing belt replacement, valve clearance check/adjustment, and probably replace the water pump and timing belt tensioner as a part of the timing belt change also. The cam oil seals should be replaced when the cams are taken out for tappet replacement.

I'd skip the fuel system clean, just replace the fuel filter and run a bottle of Techron or Berryman's through the system on occasion. Transmission oil change, yes, (if it's an auto, change the filter, too). The cabin air filter is a piece of cake to change by yourself, it should only cost about $20 CAN. Radiator flush? Just dump the coolant, fill with water a few times and drain, repeat, then refill with distilled water and the proper coolant mixed at the proper ratio.

Hi don´t forget to change the brake fluid every two years bye Jupp

The maintenance schedule is in the owner's manual. Do any maintenance items listed there that have not been done recently enough (e.g. if something needs to be done every 25,000 km, but it has been 25,000 or more km since you last did it, do it).

Of course, you'll also want to inspect tire pressure and wear, fluid levels, light bulb functions, general condition of various things, etc. and correct if necessary.

I would suggest you take your car and start a relationship with a Ford dealership service centre. They have factory trained mechanics for your car. You pay a bit more for labour costs, but it's peace of mind, because they see your type of car everyday. If you go, a service rep can print out a the maintenance schedule for you that shows what they do every 5000 Km. The guys at Mr. Lube will always try and sell you more "services." At the dealership they do the service you're there for and if they find stuff they'll let you know. I've been to Mr. Lube, and if they can they'll make sure you pay for that free paper by purchasing other services.

.02$

Good answer David. They give me a free newspaper but they charge me $110 for fuel cleaning. Ford dealership is also rip off. I don't know what I should do? I will end up to spent thgousands of dollars and still my car broke maybe.

Please advise what is important

I would never allow a Jiffy Lube to replace a Cabin Filter on a Ford Focus Sedan SE. How exactly is a Jiffy Lube going to replace one of those plastic clips on the cowel (sp? -- the plastic panel above the cabin filter) when they break one? And, it is not that hard to do.

I would check to see if you actually have a cabin filter, and if you don't already have one, in my humble opinion, don't waste your time or money installing one. If you don't have one, Ford puts a plastic cover in there instead.

Jiffy Lube has just found a new possible way to make money, cabin filters, and so they are telling their employees to do things where they sometimes have absolutely no idea of what they are actually doing, the result will likely be that they will break something on you and likely not tell you.