last night i did my oil change witch is alway nice and pricey, and i did my spark plugs (no wires), spark plugs sucks the boots are a pain in the ***!!!, also bought a fuel filter going on sometime this week. what do people think about doing a trans flush or the rear end, i was always told once your around the high miles leave good enough alone....any thoughts? has never been changed to my mileage since 20k wen i bought it (correction i only have 88k)