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Are you having problems with your Mazda B2500? Let our team of motoring experts keep you up to date with all of the latest Mazda B2500 issues & faults. We have gathered all of the most frequently asked questions and problems relating to the Mazda B2500 in one spot to help you decide if it's a smart buy.
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From what you have told us it would seem that it’s not the engine itself, the top-end has been rebuilt without solving the problem, and rebuilding the bottom-end is unlikely to fix it either. I would be looking at the places where oil and coolant could interchange, such as the intercooler, turbo etc.
THERE won't be any problems from light blends like these. You would strike problems only with much higher blends of ethanol. You would then have to consider changing seals in the fuel system. I wouldn't be concerned about the proposed blends.
Unless you need a vehicle capable of driving over rough or slippery ground, I would buy a 2WD diesel ute. It will be more economical than a 4WD and will tow your trailer without problems. Your budget will get you an upmarket ute. Look at the Toyota Hilux or new Mitsubishi Triton. Also, there are good deals available on the Mazda Bravo and Ford Courier for much less. For little more than $20,000 you'll get a 2WD diesel with a tray and toolbox.