can i tow a 1986 oldsmobile delta 88 fwd

That's the front drive Delta 88 (I had one too). The way to tow it is front wheels on a dolly. For a car that big, a pretty good size dolly, like those the rental companies use. Some of the more portable consumer models, like fold-aways, are a bit light on capacity and braking.

The car in the video is beautiful. You can tell from the underhood view and the rear axle that it is FRONT wheel drive. It's confusing because GM phased FWD in sort of erratically. I looked up Delta 88 and it showed 307V8 even though I asked for 1986. Those V8's would have been RWD and had TH350 etc. as noted. Some people back the RWD cars onto a dolly, secure the steering wheel and tow backwards. Not recommended.

Pretty sure dolly towing would work for your beauty. Impractical but I love two-doors.

Your Olds will have a Turbo350 or 400 trans...They dont have a rear pump, so that would need to be added or disconnect the driveshaft from the rear end.

Of course you could get an Car Trailer and carry the Olds on it. Your DP can no doubt handle the load.

Back in 1986, cars didn't have "recreational towing" in the owner's manual and Motorhome Mag wasn't publishing annual towing guides. If it were mine, I'd tow it on a Dolly. Pretty heavy (but very nice!) car, so be sure the Dolly has the weight capacity AND is wide enough. Some dollies are not wide enough for certain vehicles. Get a dolly with brakes.

An outfit called REMCO offers lube pumps designed to make some automatic transmissions/transaxles towable four down when they otherwise were not. I personally don't like that idea, but others have been very successful.

A Baseplate, Tow Bar, Lube Pump and Supplemental Brakes will cost you WAY more than a Dolly. And you may be able to score a good used Dolly.