Often times customers will have worn two of their tires out, but the other two are in fine shape. The customer will purchase two tires. The question now, where should those two best tires go? Contrary to what seems to be common sense, the two best tires should go to the rear of the vehicle. This logic holds true whether the vehicle is front, rear, or all wheel drive.

The reason being, the best tires will grip more, and if the best tires are in the rear, over-steer will result in wet, snowy or icy conditions. This same logic applies to rotating tires. Experts claim, if there is a 25% difference in tread depth, the best tires must go to the rear. It seems like a scam to make customers buy new tires for the front wheels as well, but I assure you the proof is in the pudding.

The lesson to be learned? Rotate your tires regularly to keep them even.

V8 six stroke engine animation. Apparently two have been designed and produced. Rumor is that they have more power, better emissions, and all that jazz. Can we cram more moving parts in there?

The opoc (opposing cylinders) engine. There are two pistons per cylinder, and is a mutant boxer motor. Check out this animation, it’s just down right nutso.

It looks like it works similar to a two stroke engine. They claim it has tremendous power and fuel economy. Also, because the stroke of each piston is so short, they claim they can run it at twice the normal speed. If this is a boxer-type motor I can rev up to 16,000 rpm, I want one, with a T88 turbo attached.

When it comes to automotive repair, there are several methods of approaching the problem. Let’s look at: known problems first, maintenance as pair, comprehensive versus fix just what is broken, as well as a few diagnostic approaches.

Known Problems First

Until we correct all the known problems in a system, we can not know if they are effecting the portion of the system we are concerned about. Often times tracking down the cause of one problem will reveal the cause of others. Use this method with a bit of common sense, replacing a gas cap for an evaporative leak will most likely not fix a misfire. However, often times vacuum leaks cause many, many problems. (For a specific example of fix know problems first, visit here )
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