Reddit reviews Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner - 12 oz., (Pack of 6)

I have modded manual 2006 tC with 106,700 miles. It treats me good but I'll give you a full insight to these cars.

Annoyances/Problems

• For the 05-06' years the TPMS light can be annoying because the tire pressure is actually monitored by the ABS sensor (even 1 psi off and mine flips out). 07' and up there is an actual sensor within the rim.
  
  
• With the manual tranny models you might encounter the famous "mouse clutch" which squeaks when you depress it (mine does when I don't lube it from time to time). Luckily there is a nice lubrication fix with liquid wrench and a guide: http://clubsciontc.com/forums/diy-install-guides-23/diy-clutch-fork-squeak-fix-9916/
  
  
• The hatch sure loves to rattle it's heart out as well. I tune it out because it really doesn't bother me that much, however if you're OCD about the rattling there is plenty of fixes to it like this one: http://www.scionlife.com/forums/tc-tech-diy-1818/hatch-rattle-fix-33086/
  
  
• The hatch handle breaking off is the most infamous nuisance with the 2005-2010 TC model years. You absolutely need to be careful opening the hatch and make sure you don't put that much force on the handle. Just press the button on the handle and lift the bottom of the hatch up.
  
  
• There has been reports of 2007 TC models using excessive amounts of oil as well. Usually it's a toss up because the 2.4 i4 2AZ-FE is mass produced and there is always a few bad apples.
  
  
• AVOID THE TRD SUPERCHARGER AT ALL COSTS. The TRD Vortech superchargers are absolute pieces of shit and most people are reporting that they break down at 15-20 thousand miles. If you have the tools, parts, and time to rebuild the supercharger then I recommend it only.
  
  Most of that information above is the most common problems with TC's. The driveline, engine, transmissions, and factory clutches (mine is original at 106,700 and still smooth) are rock solid and has never broken down on me. I have a K&N short ram, straight pipe borla exhaust, RÄZO short shifter, and coil overs on mine for performance mods... No exterior mods because it's really easy to turn a TC into a rice rocket with a few stupid pointless exterior mods.
  
  POWER
  
  
• The TC stock is 160 HP @ 5700 RPM and 163 lb-ft torque @ 4000 RPM for the 05'-06 years. Stock power for the 07'-10' is 161 HP @ 6000 PM and 162 lb-ft torque @ 4000 RPM.
  
  
• The TC is mostly torque IMO with the stick shift. 1st-3rd on mine I really can feel the car hauling ass when I put my foot down on the gas and 4-5th is mostly just cruising along on a main road or freeway.
  
  
• The car is by no means fast at all however it can really get out of its way and goes when kick down thanks to the high torque on the car.
  
  
• I recommend 89 or 91 mid grade fuel from Shell, Exxon, Mobil, Chevron, or CitGO (depending where you live). The lowest octane is OK for the engine but I notice my MPG drops a bit and the car feels a bit more sluggish. I highly recommend Premium 91 or 93 fuel (depending where you live as well with the octane ratings) if you're going to track your car. People say it is snake oil (probably all stock IMO) but with mods on mine I definitely notice the difference between premium fuel vs. cheapo gas from some thrifty gas station.
  
  SAFETY
  
  
• All TC accidents I have seen all of the people have walked away with just cuts or bruises and sometimes NOTHING. These cars are rock solid (just feel the body it's pretty damn hard) and the beer can models come with 3 standard airbags: driver and passenger frontal+driver knee airbag. The TC's with the factory option side airbags include side torso for both seats and side curtain airbags on both sides.
  
  
• NTHSA ratings for the 2006 Scion TC:
  
• 5 stars driver, 4 stars passenger, 4 stars rollover.
  
• 4 stars side collision for front and 4 stars for side collision in the back.
  
  
• IIHS evaluation overall for the 2006 Scion TC: Acceptable.
  
• Side crash IIHS: https://www.youtube.com/watch?v=hfZli6aqscc
  
• Frontal crash IIHS: https://www.youtube.com/watch?v=dlXeEG85grM
  
  
  
• NTHSA ratings for the 2nd gen TC (2012):
  
• 5 star driver, 4 stars passenger, 4 stars roll over.
  
• 5 stars for all the side crash tests.
  
  
• IIHS evaluation overall for 2012 Scion TC: Good.
  
• Frontal crash IIHS: https://www.youtube.com/watch?v=-p5XBrPHx9E
  
• Side Crash IIHS (2011 model tested in video): https://www.youtube.com/watch?v=p9R9FKKfhvw
  
  OVERALL
  
  On the final note: This car can be an absolute gas hog as well. The gears on the manual are really awkward and 5th gear going 65 MPH on the freeway I am at 3000 RPM... (really needs a 6th gear). In city driving isn't much better but overall I average about 29 mpg cruising on the freeway and 23 in the city. Overall I highly recommend the car but I don't recommend it for a teen because of it's power (18 years old at minimum). Most TC accidents I've seen has been a naive teenager showing off which ends up in a chaotic mess in the end and that is the reason why the TC is a bit more expensive to insure.
  
  EDIT
  
• I strongly recommend Chevron Techron concentrated fuel cleaner: http://www.amazon.com/Chevron-67740-CASE-Techron-Concentrate-Cleaner/dp/B00092893O
  
  
• The Techron fuel cleaner has improved my cars performance by clearing up all the shit in the fuel system, valves, and combustion chambers. Usually a sign your car needs Techron is when it idles rougly and when you turn on the AC. Another sign is the throttle not being really responsive (Techron really improved my throttle response!)
  
  
• Not sure if the MPG improvement is snakeoil or not but so far my gas gauge hasn't dropped like a rock while commuting on the freeway.

NOTE: To all those that have bought gas at a bad station and are not experiencing problems so far. Do yourself and your car a favor anyways and first, go change the oil. Second, run a bottle of Techron through your fuel.

LINKY - Go pick it up at Autozone however, so you can get it done faster.