With today’s cars auto repair manuals are crucial for diagnosing and repairing vehicles in a timely manner. Some auto mechanics prefer paper books, others prefer to have a software program loaded onto their computer or to access information via the internet. However you prefer to access automotive repair information, this article includes some of the most popular companies that specialize in automotive repair information.Mitchell 1 On Demand is owned by the Snap On corporation and has been a popular choice for automotive repair information for years. Many auto repair shops use Mitchel’s information including repair procedures, torque specifications, TSB’s (Technical Service Bulletins) and auto repair tips. Mitchell offers the DIY information available online, branded as eAutoRepair. The online repair information company, eAutoRepair offers an abbreviated subscription for the DIY at a much lower cost than automotive repair shops pay. Each subscription covers only one vehicle, but this works out great for the DIY’er that needs to access automotive repair information and would like to get it with the convenience of the internet.ALLData is another very popular choice for automotive professionals. As with Mitchell, repair information that was provided by the car manufacturers are made available to the auto technician or car owner. Diagrams, timing belt marks, trouble code information etc. And ALLData has now made their products available online for the DIYer as well at ALLData DIY.There are many other good automotive repair manuals available from other companies as well, but these two are the ones that I’ve used the most over the years. The tips and information that these two companies provide are likely to make any DIY project a success.