CRC 05021 Technician Grade Gasket Remover - 12 Wt Oz.

Excellent quality. Definitely cleans mechanical parts well. I used the entire box when rebuilding the top end of my LS2 and cleaning out the engine bay.

Works amazing, better than carburetor cleaner or brake cleaner that dissolves before I get to use something in conjunction with it. I can spray it on a gasket, and leave it for 15 minutes and it's still there waiting for me! Best thing is it works perfectly with a roloc pad and removes EVERY BIT OF THE GASKET! I took pictures of a 350 small block with the original head gaskets on the bottom end of the engine (before and after). As you can see it DESTROYS the gasket but not the plastic roloc pad. Couldn't believe it! Will only be using this product for gasket removal, it just works better than anything I have ever used (and I've tried everything from mineral spirits to pinesol to remove gaskets and everything in between)!

I definitely recommend this over a variety of gasket removers! I have tried products from 3M, Klean Strip, and other companies as well as oven cleaners and acetone. CRC works the best! It's strength is somewhere between brands you'll find at big box automotive and hardware stores and aircraft stripper. It's powerful and works quickly but is not as damaging as aircraft stripper. You can leave this on for 15-30min and the gasket will be completely soft and gooey, making removal and clean up with acetone a breeze!I've heard if you leave it on too long it will begin to strip paint. I've never had this problem with this product; however, I'd still be cautious!

Worked very well for me on gasket material stuck to aluminum. It sprayed out at fairly high pressure and with a wide spray pattern, so beware. Once the product hit the manifold it became a gel immediately, which was nice because it stayed in place. I think the 10min wait time was a bit short for the first pass. I probably sprayed and scraped 4 times to be sure, using Shark 66 Plastic Razor Blades.

Wish I had this when doing valve covers, as this removed 30 year old baked on gasket, from my timing cover, like soft butter. I'll order this again on the next project. Advice to user, let it soak a bit longer than can said, especially if your removing original parts. On aluminum, when you can't go aggressive, patience is best, soak it a couple times if you need too.

This one star isn't in regards to the remover itself but more as a warning to future buyers. DON'T MAKE THE SAME MISTAKE I DID! I was using this to help remove some old graphite head gasket baked into a iron block. Some of the spray got in the cylinders and etched the machined surface. Obviously I let it sit on the surface too long, typically I was wiping it up right away as I didn't want anything sitting on the cylinder surface other that oil. But I didn't expect this stuff to actually eat the metal, for it to have that kind of damaging ability, it should have some sort of warning or advisement in the directions on the can.Honestly this stuff didn't do much for that gasket anyway, nor did it help remove a paper gasket at the rear main seal, it does work well at removing old RTV...Removes RTV, paint, and eats metal.

I bought this to easily remove gaskets from a 30 year old motorcycle engine which I am currently rebuilding. The gaskets, sort of paper gasket, were pretty much baked on.Unfortunately this gasket remover does not help at all. I followed instruction and even let it sit over night, but no difference.I am only able to scrape off a tiny bit of the old gasket and will be looking for other removers.Maybe I was expecting some sort of magic, but there's not.Disappointed and definitely no time saver.Giving it two stars thinking it may just not work on my kind of gaskets...

It works but not quite as well as advertised. I had to clean off 16 years old baked on gasket material from aluminum engine parts, so a razor blade was out of the question. I purchased this can thinking it would make it easy. While it did aid in softening the extremely hard and brittle gasket material, it was still far from easy. I had to spray it on, wait 5-10 minutes, only to be able to scrape off only the topmost layer of material with my plastic razor blade. Then I had to spray again, wait 5-10 more minutes, and scrape the next layer, and repeat several times until all of the gasket material was removed. So, the product DOES work and DOES soften up the material but it requires repeated application.