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Originally Posted by pitbullowner_2
i bought my car from the dealer. My timing belt looks pretty good. For the the coolant change do you think 50/50 would be good during the summer time or what. and as far as the oil use a synthetic blend like mobil 1, and should i use 10w-30?
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Yes, 50/50 water/antifreeze. There is a white plastic drain petcock on the back of the 2g radiator (not sure about the 1g). You can see it if you look down the inside face of the radiator with the hood up - it's on the driver's side at the bottom facing the back of the car. Put a large enough container to catch 2 gallons total, use pliers to turn the petcock, and open the coolant cap on the front-passenger side of the motor. Of course, do this with a cold engine, and dispose of the old coolant properly and quickly (so you don't kill your cat or dog or kid or neighbor's kid, dog, or cat). You might ask around to see what people think about additives that you can add for a few minutes before you drain the old coolant. There might be something that will clean things up a bit and flush the crap out with the old coolant.
I've always run Mobil 1 synthetic - either 0w30 or 5w30, but 10w30 is okay for warm weather conditions. I'm not sure why folks run 40 weight oil, but there might be a good reason to do so.
Also, you should do oil changes every 2k miles despite what the manual says. Turbos are very hard on oil, and if you change it more frequently, your turbo will last longer. Oil will "coke" on the hot (turbine) side of your turbo if it gets too hot and breaks down. This deposits itself inside the oil passages. This happens alot more when you shut down the car and the oil and coolant flow stops pumping through the turbine's center section but the heat in the turbine housing is still soaking into the center section. Some people use turbo timers which will keep the motor running some period of time after you pull the key out of the ignition for precisely this reason. Others give the motor 30 seconds or more before they shut down (and I take it easy the last couple of minutes before I get where I'm going). If you just got done with a very hard, high boost haul-ass through town or on the track, you should give it a minute or two. Nevetheless, the coke in the lubrication system of the turbo will eventually block oil flow and lead to bearing failures. Changing the oil more frequently and using synthetics which operate properly at higher temperatures decreases the rate at which coke is deposited inside the turbo.
