Question about 1997 Buick LeSabre

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Transmission fluid I got this car used and no longer have the owners manual. I am wondering at what point I should have the transmission fluid changed if at all? Is there a possibility of waiting too long?

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  • egg115 Jun 16, 2009

    I know a bit of the car's history--it's a 1997 and had regular maintenance before I bought it. However, the transmission fluid has never been changed and it now has 90K miles. I have heard mixed opinions on whether or not to change the fluid. The fluid is still red/pink but is starting to smell burnt. I was wondering if it is too late to change it--would it do more harm than good?

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Unless you know the vehicles history, it's wise to change all fluids when you get a new vehicle. This gives you a good baseline for future service. Although impractical and expensive it would do no harm to change the fluids once a week. If you wait too long, that's another story...fluids break down chemically and permit wear and failure of the components they are supposed to protect. Changing the trans fluid after you already feel a problem is usually too late. After changing, you can resume normal intervals of about 30K for transmission.

Posted on Jun 16, 2009

  • Richard Scordino Jun 16, 2009

    Yes, it's overdue but I would change it. Some transmission shops will not, but that's usually a "no-think blanket policy" designed to provide max profit and the least amount of problems...I take it on a case-by case basis and you don't seem to have any other issues that would concern me. I've done this on vehicles with nearly 200k on them and fluid that was black...and units continued to operate normally or better for another 100K!! OK, just because I said that, yours will explode after service...but odds are it will not.

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