Good evening, Scotty! Hope you're enjoying the cooler Tennessee weather. I currently have a 2007 Lexus IS250 and previously I have owned a 1990 Lincoln Town Car, 1990 Toyota Celica, and 2008 GMC Acadia. While I am nowhere near as experienced as you, I enjoy working on my vehicles and want to get more experience working on different projects in the upcoming years. I love sharing what I know with people that need help understanding how their vehicles work and what that means for reliability, performance, and functionality. Best wishes!
Nice! I just bought a 2008 is250 awd. The only thing I'm worried about is the carbon build up stuff I read. The general consensus seems to be step on it and hit high rpms and be sure to use the premium fuel.
@effimero89 I will be doing a full tune-up on my IS250 AWD within the next couple weeks (I'll be replacing the spark plugs, coolant, engine and transmission oil, differential fluid was changed when my brother and I changed a rear CV axle, fuel pump was swapped out with a new one since the old one was going out, and the air filter and cabin air filter will be changed out with better K&N AEM cleanable ones). I'm not looking to ruin it with badly thought out performance modifications, but I'd like to change out the infotainment system with something newer, have the interior reupholstered, and have the car repainted as I plan on keeping the car until the wheels fall off.
@effimero89
As far as cleaning out carbon is concerned, however, using premium grade gasoline can help a little bit, however this alone will not completely eliminate carbon build-up nor will your Lexus IS250 stop running if you use regular grade gasoline. Scotty Kilmer has discussed professional services that can be done as well as DIY solutions to help keep things clean on some videos and Q&A segments (ex. using spray throttle cleaner). I will warm you I am no professional, but as I work on my own vehicles more, I will have more insight to share with people on here, and as I am someone who is genuinely interested in how and why things work the way they do, I would be happy to explain what I know for sure (chemically, electronically, mechanically, etc.).