Review: Meguiar's M101 Compound

Circa40

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I finally had a chance to use this product and directly compare it to Menzerna FG400 and M105 (from memory).

I am sure anyone reading this review has at lease read something about it here on AGO. This is the latest Megs compound that supposedly cuts like a compound but finishes nearly LSP ready. The benefits are less buffing and a real time saver.
Here is its full description on the AG store: Meguiars M101 Foam Cut Compound, meguiars compound, m101 compound, meguiars foam cut compound

Vehicle test subject:
1995 Toyota Tercel.
This vehicle likely has never seen wax or polish in the last 5 years at least. I do apologize that I forgot to take any before pics, but took some compelling "50/50" shots. This car appears to have been painted several times in the past with different levels of quality. The rear of this car seems to have been rear ended in the past and was painted very very cheaply. There are also tons of other defects (acid rain/chemical/bird soil etching and some very deep scratches) that M101 can probably remove, I don't feel comfortable removing that much clear coat.

Pre polishing:
- Washed with Dawn soap with my LC blue sponge
- Chem Guys Clay Mitt with Luber
- Iron-X

Tools used:
Flex 3401
Orange CCS 6" pads

Thoughts on M101:

The first thing that I did notice is that M101 cuts very quickly. I was able to correct most of the moderate defects with 2 heavy passes and 1 light pass. Overall, twice as quick as M105 and at least three times as quick as FG400.

This is after 2 heavy and 1 light pass.
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50/50. Notice the paint condition in the tape line.
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Deep scratches on the fender:
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Only the deepest scratches remain:
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50/50 of the trunk lid. Again, this area was repainted and it was done pretty badly (poor paint quality).
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FG400/tape line/M101 on the trunk lid (everything else being equal)
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Picture out in the sun (M101 only).
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Pros/Cons
Pros:
-Near LSP ready. I would go out on a limb and say that it might be LSP ready on lighter colors. But very likely you'll have to use M205 or a similar polish on darker colors. Pad choice and technique are obviously important here.
- Quick! I think pros would appreciate the quality and quantity of cut in a fraction of the time when compared to other harsh compounds.

Cons:
- I was a bit disappointed in the working time of M101. Although the pad stays moist longer then M105, I would prefer it to be a bit longer. I had to spritz a little water on my pad when I was working on deeper scratches.
-Dust! Unless Im doing something wrong, there is quite a bit of dust. I normally prime a clean fresh pad before polishing and apply 2~3 pea sized dots of product on the pad after every panel. I brush and clean the pad after every panel as well - just like M105/205.
Dust residue from the pads:
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Final thoughts:
Meguiar's has formulated a killer compound that will remove just about anything thrown at it. Is it better then FG400? Hard to say, they both claim to remove the same 1200 grit sanding marks but when using these chemicals, technique vary (SMAT VS. DAT) . Is it better then M105? Yes. I think M101 should eventually replace it. It does everything M105 does, but cuts faster, slightly less dusty and finishes much better. Is it worth twice the price as M105? It really depends on how much time you want to devote into polishing. Im going to echo what I said above: Its really a time saver to polish away deep defects and finish nearly LSP ready. That alone should be worth the price difference to most.
 
I've never had M101 dust on me. Were you compounding in direct sunlight? I like M101 a lot you can vary the cut with different pads just like M205.
 
My 1st bottle of 101 is scheduled to deliver tomorrow. I'm excited to finally get my hands on that stuff.
 
I had quite a bit of dust when using M101. I was using a megs MF pad and initially started on speed 4 on my pc, then was using speed 5. The cut was great like you stated, but I felt it dusted like crazy? I was using compressed air, keeping the pad wet between panels to try and prevent it, and using 3 drops or so.
 
I've never had M101 dust on me. Were you compounding in direct sunlight? I like M101 a lot you can vary the cut with different pads just like M205.

Nope, all polishing was done in the garage.

My 1st bottle of 101 is scheduled to deliver tomorrow. I'm excited to finally get my hands on that stuff.

I think you'll love it

I had quite a bit of dust when using M101. I was using a megs MF pad and initially started on speed 4 on my pc, then was using speed 5. The cut was great like you stated, but I felt it dusted like crazy? I was using compressed air, keeping the pad wet between panels to try and prevent it, and using 3 drops or so.

I've always thought it comes with the territory - there's always some kind of dusting with harsh compounds. I might be wrong tho
 
Nice review. After getting 101, I feel 105 is going to collect a lot of dust.
 
Thanks for the review, im consider to buy M101 now i know pro and cons thank to your review:dblthumb2:
 
I had quite a bit of dust when using M101. I was using a megs MF pad and initially started on speed 4 on my pc, then was using speed 5. The cut was great like you stated, but I felt it dusted like crazy? I was using compressed air, keeping the pad wet between panels to try and prevent it, and using 3 drops or so.

Well I never used a mf pad with M101. It was designed to be used with foam pads. Never been a big fan of the mf system. It works but so does wool and foam.
 
Nope, all polishing was done in the garage.

Did you keep the work area to a normal size 20"x20" or so? Once it flashes you can't keep working the product or it will dust. Also you can't use too much product on the pad and you do have to keep the pads clean but thats nothing new for the compounding stage.

I use to use M105 still have a couple bottles but I'll use M101 from now on it's just that much better.
 
I did a tricky combination this weekend, like this:
Primed the cutting MF pad with D300 then followed with 2 drops from M105 and M101.... sometimes 2 from M101 and 1 from M105 and on some panels 3 from M101.

I'm really in love with M101. It works wonders by hand and I'm able to get a great correction with a cyan 3" pad by hand on tight spots using m101.

Now, following my test combo....
The more I add M101, the more working time I got.... going full M101 with D300 priming the pad gave a truly huge working time using a G110v2.
Temperature was around 20C and humidity might have been around 50-70%.
There was dust when I hit some edges, but as I was using 3 compounds I couldn't tell which one was.... I know D300 dusts a little, M105 a lot and M101 I can't say, but I would say it seems to be about the same D300 does, which is much better than M105.
 
Did you keep the work area to a normal size 20"x20" or so? Once it flashes you can't keep working the product or it will dust. Also you can't use too much product on the pad and you do have to keep the pads clean but thats nothing new for the compounding stage.

I use to use M105 still have a couple bottles but I'll use M101 from now on it's just that much better.

Yes, around that area...just like M105 :xyxthumbs:
 
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I used M101 over the weekend. It's really good, a little dust but not overwhelming. I still have plenty of M105 but M101 is now my heavy hitter.
 
From the color of the 'dust' on the brush that looks more like paint. Remember with the amount of cut it has, it is removing a TON more paint/gunk than a lighter cutting compound, much faster. (Especially a DAT compound.)

That being said, I've not used 101 with MF either, only foam so far. Plenty of D300 and 151 though. ;) To be honest.... I'm afraid to use that much cut all at once.
 
From the color of the 'dust' on the brush that looks more like paint. Remember with the amount of cut it has, it is removing a TON more paint/gunk than a lighter cutting compound, much faster. (Especially a DAT compound.)

That being said, I've not used 101 with MF either, only foam so far. Plenty of D300 and 151 though. ;) To be honest.... I'm afraid to use that much cut all at once.
I wouldn't prefer to use that much either, I think next go I'll start with 101 and a yellow Uber pad, the minerals in the reclaimed water in San Antonio are horrible and were baked on for close to a year. Granted the car was through numerous washes, claying, etc... in between then but that hardly scared them so polishing was required. It got a majority of them and I don't think the next time it'll require that much cut.
 
Great review Circa!

M101 is the shiznits.... I've been saying that since I got my hands on it!

Although, I've compounded with it in direct sunlight and still didn't get dust so I'm curious what is causing it to dust in your experiences.

Yeah I saw that video, it ultimately swayed me towards M101. Im not sure why I got dusting. To be clear, the dusting is no where near M105, it was just my observation.

I used M101 over the weekend. It's really good, a little dust but not overwhelming. I still have plenty of M105 but M101 is now my heavy hitter.

Im trying to figure out what to do with my surplus M105 lol.

From the color of the 'dust' on the brush that looks more like paint. Remember with the amount of cut it has, it is removing a TON more paint/gunk than a lighter cutting compound, much faster. (Especially a DAT compound.)

You might be correct there sir. I didnt think of that.
 
I picked up M101 a few weeks back. I used it on my hood to remove the marring left from the Speedy Surface towel I tried recently.

Compared to M105, I really liked it. It cut better and the dusted less than 105. I was amazed how well it finished down, so much so that I went right to my LSP (Max Wax). In the late day light, it looked fantastic but the next day in full sun I did see some slight halograms. I stripped the panel with Griot's Paint Prep and then hit it with M205 and a white 5.5" LC flat pad on my 3401. After only a few section passes, the holograms were gone and I reapplied my LSP.
 
Well I never used a mf pad with M101. It was designed to be used with foam pads. Never been a big fan of the mf system. It works but so does wool and foam.

This has to have a lot to do with the dusting but then again I haven't had the chance to use my brand new bottle of M101 yet. Thanks for all the comments guys!

Sent from my SPH-M930 using AG Online
 
Something else that's great about M101 is it's easy to remove you don't have fight with it as sometimes 105 may be hard to get off.
 
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