The internet is a great place to get information and advice, but when you’re dealing with the complicated machinery of an engine, forums filled with advice from random people may not be the best place to start.
Haynes recently did a review of automotive advice in forums and found that “two-thirds of the free advice was found to be incorrect or missing information.” The advice was reviewed by ASE certified mechanics who warned that some of the advice could end up costing DIYers thousands of dollars. So much for it being free.
Read the entire article, including a review of OEM manuals and an explanation of the process Haynes uses to create its manuals here: http://blog.haynes.com/haynes-manuals-reviews-diy-repair/
BTW, if the Haynes process looks familiar, that’s because Clymer writes our manuals the same way.