I'd like to propose that one *maintained* post of all abbreviations be pinned at the top of this topic. I've tried to gather all abbreviations from the posts in this topic. There are a couple of duplicates, and probably a typo or two, so feel free to pick through this list and make any suggestions for adds, changes, or deletes.
303 - 303 Aerospace Protectant
AIO - "All-In-One (Zaino, Klasse or Polylack)"
AP063 - Menzerna Sealing Wax
AW - Duragloss Aquawax
CL - Clay Lube
CMCB - Clay Magic Clay Bar
CS - Zaino Clearseal
Edge - Brand of Polishig Pad
FGC - Fast Glass Cleaner
FPII - Menzerna's Final Polish II
GPC - General Purpose Cleaner
H2O - Water
HGSG - Klasse High Gloss Sealant Glaze
IG - Stoner Invisible Glass
IP - Menzerna's Intensive Polish
LC - Leather Conditioner
LC - Lake Country buffing pads
LSP - Last Step Product
LV - Lexol Vinylex
MF - Microfibre or Microfibre
MF's - microfiber towels
MSLT - Stoner More Shine Less Time
MSTD - Final Inspection Mid Sheen Tyre Dressing
OC - Optimum Compound
OCP - Optimum Car Polish
OCW - Optimum Car Wax
OGC - Optimum Gloss-Coat
OHC - Optimum Hyper Compound
OID - Optimum Instant Detailer
ONR - Optimum No Rinse
OOC - Optimum Opti Clean
OOS - Optimum Opti-seal
OP - Optimum Car Polish
OPS - Optimum PoliSeal
OS - Opti-seal
OSW - Optimum Spray Wax
P21S - P21S Brand
PC - Porter Cable
PG - Menzerna PowerGloss
PNS - Polylack Nano Seal
PO106FF - Menzerna Final Finish Hi-Cut Hi Gloss (for CeramiClear)
PO85RD - Menzerna Final Finish High Gloss (for CeramiClear)
PO85RD3.01 - Menzerna Intensive Polish (for CeramiClear)
PO85U - Menzerna Final Finish Hi-Cut
PO87MF - Menzerna Final Finish
PO91L - Menzerna Intensive Polish
POS34A - Menzerna Powergloss
PPBS - Final Inspection Paint Pampering Body Shampoo
PS - Pinnacle Souverän Paste Wax
PWC - Final Inspection Power Wheel Cleaner
QD - Quick Detailer
QEW - Quick & Easy Wash (Low water wash)
RO - Random Orbital Polisher
SMR - swirl mark remover
SSB - Stoner Speed Bead
SSBS - Final Inspection Synthetic Suds Body Shampoo
UDSP - Ultima Detail Spray Plus
UISG - Ultima Interior Shampoo Gel
UITP - Ultima Interior Guard Plus
UPGP - Ultima Paint Guard Plus
UPGW - Ultima Paint Guard Wash
UPPP - Ultima Paint Prep Plus
UTTG - Ultima Tire & Trim Guard
UWWP - Ultima Waterless Wash Plus
WM - Wash Mitt
WOWA - Wax On Walk Away
WOWO - Wax On Wax Off
WW - Waffle Weave Microfiber
WWDT - Waffle Weave Drying towel
Z - Zaino Brand
Z-AIO - Zaino All-In-One
Z-CS - Zaino Clear Seal
Z1 - Zaino Show Car Sealant Lock
Z10 - Zaino Leather Conditioner
Z12 - Zaino Glass Polish
Z14 - Zaino Plastic Cleaner & Polish
Z16 - Zaino Tyre Dressing
Z18 - Zaino Clay
Z2 - Zaino Show Car Sealant for Clear Coated Finishes (now Z2pro)
Z3 - Zaino Show Car Sealant for Regular Paint
Z5 - Zaino Sealant for Swirl Marks and Fine Scratches (now Z5pro)
Z6 - Zaino Ultra Clean Gloss Enhancer Spray
Z7 - Zaino Show Car Wash
Z8 - Zaino Grand Finale Spray
Z9 - Zaino Leather Cleaner
ZFX - "Zaino Accelerator Additive For Z2, Z3, Z5"
µm -Micrometer - Paint Thickness Unit of Measurment
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Tom