ive had my car for about 16k miles, and just to play it same ill assume that it hasnt had any service or maintinence done to it in about 25-30k miles. given that, what should i look into getting done? how often should i have the tranny and engine flushed? what about the spark plugs and fuel injectors? also, how do i clean the throtle body? sorry for all the questions, but i need to learn


p.s. i hve been getting regular oil changes every 3k miles, just nothing else yet.