I've used Meguiar's M40 Mirror Glaze Vinyl & Rubber Cleaner & Conditioner for a good while, great product but what is the need for M39 Mirror Glaze Heavy Duty Vinyl Cleaner?
What advantages does M39 offer over cleaning off contamination when necessary with a mild degreaser and then using M40 on trim/vinyl interior etc, I have been doing that up till now and I always get a flawless finish?
There must be some special usage/nice situation where M39 is the clearly the best option but I just can't see where that would be and why.
What advantages does M39 offer over cleaning off contamination when necessary with a mild degreaser and then using M40 on trim/vinyl interior etc, I have been doing that up till now and I always get a flawless finish?
There must be some special usage/nice situation where M39 is the clearly the best option but I just can't see where that would be and why.
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