It's a silver paste that you'll get on you no matter how hard you try not to, and it works great.
But if you have broken 2 plugs trying to screw them in, you may have a bigger problem.
You might want to run a thread chaser thru there to make sure clean them up
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'84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, 2" drive train lift, BudBuilt x-member/skid, 30 spl Longs
'83 Toy P/U - Buick 231 V6, Holley 4 bbl, Weiand intake, Downey headers, TH350 w/700R4 low gearset,
'89 4Runner SR5 - stock