Could i add Lucas transmission fluid before flushing my trans

Asked by Nov 09, 2015 at 08:35 AM about the 2003 Chevrolet Suburban LT 1500 4WD

Question type: Maintenance & Repair

3 Answers

50,335

It is not recommended to flush a transmission since it will move debris threw crew-shell parts of trany, no matter how well you do it debris will hang up in some nook or cranny. Just change the fluid and filter and add the Lucas treatment with it.

1 out of 1 people think this is helpful.
148,485

Ditto. Do not flush. Far more harm than benefit

1 out of 1 people think this is helpful.
46,435

Adding the Lucas fluid before a flush would be wasted money as it would be flushed out along with the old transmission fluid.

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