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My 2007 Mazda CX7 2.3l turbo is approaching 1000 miles, so will be changing out the breakin oil. The owners manual calls specifically for "SL" rated 5w30 oil. For the first two changes, I will probably let the dealer do the changes because they will be free. Dealer tells me they use Motorcraft...

Does anyone have experience with a Mazda3? My question is about comfort & reliability, etc. I am considering purchasing this car either in the "Speed3" or just "3", Grand Touring trim level. If I get the Speed3 version, (2.3 liter, 263 horsepower, 20 city/28 highway mpg), it is probably a mid...

I got my first UOA results today and would like to get some comments, please. Details are: 2002 Yukon XL, 5.3l engine. 42,328 total miles on car. Filter changed from Amsoil SDF-15 to Baldwin B1432 when OLM said to change oil, 1/2qt top off. That was with 7,800 miles on this oil. 8,297 miles on...

I am new to post, but have lurked for sometime here. I have always been a die hard believer in 3k OCI's mostly using 5w30 M1 and Castrol Syntech depending on which was on sale at Wallyworld. A few months ago, the little woman & I decided to take our 2002 Yukon XL from NC to CA and back. (It...