Will the automatic fluid type make a difference e in my 2003 Buick lesabre

Maintenance/Repairs
1

2003 Buick lesabre automatic v6 3800

dextron VI comes in many type the dealer gave me 10 -9118 yet other companies say any backward fluid will work , is this true to adding a conventional fluid.

2

Yes it is. Don’t over-think this. Dextron is backwards compatible.

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any type synthetic or conventional??

4

any type synthetic or conventional??

5

Any type Dextron or universal synthetic or conventional is perfectly fine. My preference is Dextron VI Just don’t pour Mercon or Toyota or Honda spec ATF.

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*Thanks this explains a lot so I can use the Dextron VI in my 2003 Buick *