.
A manual slider is not a whole lot more than a standard hitch.
An auto slider would be a bigger expense.
Only way to know for sure (if you need a slider) would be to hear from someone who has the *same* truck & trailer.
IMO - if you can't get a definitive answer (from an owner of your combo), go with a manual slider.
Cheap insurance.
Also.....you can always:
Keep it - even if you don't need it.
Sell it and move *up* to an auto slider - or *down* to a standard hitch.
Lastly - ask that salesman to give you a demo (with his or someone else's truck & trlr)..:W
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