I agree 90 bucks for the computerized mayhem under hoods nowadays is well worth it. I take my wife’s 2015 Jeep Grand Cherokee into the shop for any maintenance, even routine, I won’t even change the oil. I work on my 2003 F250 Super Duty and GEO Tracker I rebuilt this summer and am willing to try any car I can find a Haynes or Chiltons manual for. I am getting ready to tear into my 1998 Big Bear 350 next.