I have a 98 Buick lesabre and there is transmitted fluid in the coolant. I'm sure I will have to replace the radiator but what else will I have to do?


Asked by Dec 08, 2015 at 02:28 PM about the 1998 Buick LeSabre Custom

Question type: Maintenance & Repair

9 Answers


You are correct in assuming you will need to replace the radiator. Once you install the new radiator I would flush the engine out and also change the transmission fluid and filter in case coolant got into the transmission.

1 of 1 people found this helpful.

If you have not replaced the radiator hoses in the last coupe of years, I would install a new set with the new radiator.

1 of 1 people found this helpful.

And make sure the coolant lines are good. That's how it got in there in the first place

2 of 2 people found this helpful.

Howdy Ford!

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Good afternoon my friend

1 of 1 people found this helpful.

It is very important to check to see if any coolant got into the transmission. I mean like RIGHT A WAY. Coolant will ruin an automatic transmission real fast. The transmission fluid likely got in the radiator from a damaged transmission fluid line in the bottom of the radiator. It is possible that coolant got into the transmission also.

1 of 1 people found this helpful.

Hello FordNut and Full-of- Regrets! Good evening to you both.

1 of 1 people found this helpful.

Thank you for the reply! I will get on it ASAP!!

1 of 1 people found this helpful.

Back atcha Bob.

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