Why don't you try a 50/50 (or 70/30) mix of MTG/MTL.
I may do this in the spring although that concrete floor in my garage is just too cold to be laying on and experimenting with fluids this time of year.
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my garage is just too cold to be laying on and experimenting with fluids this time of year
If you need to get under the car I'd suggest you lie on a big piece of cardboard - keeps you insulated from the cold floor and also lets you slide around under there with ease.
