I just bought a 1994 gs300. I love it!!!! It has 75,000 miles . I want to give it a tune-up, but I would really like some help on what brands of products I should buy and what should I replace when I tune it up. I know how to perform a tune-up, but sometimes cars that are very computerized can be effected if you don't do something the right way. I am having the transmission fluid replaced and the filter and flushing it. I am also having the fuel injectors cleaned. I do not know when the last tune-up was done so I am not going to take any chances. I do know that the previous owners would always take it to lexus to get anything and everything done to it. Can anyone give this new lexus owner some advice. I'm not trying to be rude, but if you respond please be experienced.