Re: 1989 Buick Century Servicing Requirements

That engine has a timing chain, not a belt. Many people will tell you that engine may eventually have a coolant leak. Keep an eye on the coolant level and if it ever drops, find and repair leak
immediately because it may leak into the oil. Other than that, you have a lot of miles left. GW
Ben Holness wrote:

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What needs to be done kind of depends on the service history. There's no timing belt, it uses a chain. Spark plugs interval would be every 30K or so, coolant every 2 years, check and replace the accessory drive belt if necessary..
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