I had to go to a NAPA parts store to find it...initially I couldn't find it at Kragen or Pep Boys so I picked up Loctite Headliner Adhesive at an AutoZone but the next day found the recommended 3M 8090. They might have it at Lowe's as 3M 90...

I raised the hood straight up and prepped the engine bay by laying a thick u-haul moving box atop the crossover manifold to kneel on (I weigh 175lbs) and then spread a large blue plastic drop cloth/tarp from Harbor Freight from the top of the windsheild to the ground in front of the car. It also covered the fenders to the ground. Taped everything in place with duct tape. I fitted the pad dry one time to check for any irregular fit areas but found none.

I laid the pad on the tarp over my engine with the foil side facing down and the front pointing forward as if it were already in place. I put on some nitrile gloves and got busy.

I sprayed the first pass over the rear third of the pad as a test run (next time I would spray the entire surface of the pad.) Then sprayed the entire hood. After about 5 minutes I applied the second pass in a diagonal pattern to the first and ultimately the third pass perpendicular to the first. I just made the three passes before emptying the can.

I think the secret to using this stuff is to apply as directed on the can...just let it dry completely between passes. One immediate benefit is you can clearly see your spray pattern when it drys and fill in any missed areas on the next pass.

The can states you have up to an hour after application to bond the items so I gave it plenty of time to dry after the last pass...15 minutes or so. I had zero problem placing the pad from the bottom center first and then up through the middle to the nose of the hood. I then went out from the center to each side using my hands first and then a small plastic box about 6"x6" and two inches wide to smooth out firmly.

[forgot to mention that clean up was a breeze - I slipped off my gloves over the head of the can, set it on the $3 blue tarp and rolled the whole enchilada up and tossed it in the dumpster. Zero overspray on anything but the tarp and very little of that.]

This morning it looked as factory firm a fit over the contours on the sides as it did last night. If my camera wasn't drying out after taking an accidental bath hiking this weekend I would have taken pics along the way....

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1991 300SL 71K miles young