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In regard to oil weight issue, we got home from colo trip saturday. I went to dealer this morning and spoke to them about the oil issue I am having. Well, they must be totally incompetent. The service writer said all the vehicles (mazdas) use 5w-20. So I showed him my owner's manual and he...

how much improvement would you see if the engine was tuned properly to run a little leaner? Will this car even pass an emissions test with as much exhaust residue as it makes? I have a F-150 with many miles on it and the inside of tail pipe still looks like new without any soot or exhaust...

I would prefer to have the polished piece black-coated to eliminate the darn glare when driving on a sunny day.

My brother took his VW turbo to a quick-change oil shop and they overfilled his engine. Well, while cruising down the interstate he noticed a large cloud of smoke pouring out of the back of his car. Needless to say, he had to pull over because engine performance dropped off dramatically. The...

I just found this forum a few minutes ago while sitting here in hotel room while on a road trip with our new '7' that we purchased about three weeks ago. Before we left for CO from San Antonio I had dealer change oil and car had about 600 miles on it. I also believe in changing oil early in a...

new '7' owner We bought a new 7 a few weeks ago and we are on our first road trip with this car. The most annoying thing about this car is the glare from sun shining onto the brushed stainless or alum bezel that surrounds the center section of console or dash.