Head-to-head · Best Car Wax

Collinite 845 Insulator Wax vs Meguiar's Ultimate Liquid Wax

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Meguiar's Ultimate Liquid Wax comes out ahead by a narrow margin (4.2 vs 4.5). The gap is mostly about Daily drivers who want a forgiving, long-lasting liquid wax that goes on fast and beads water for months. — read the strengths below before deciding.

Ranked #3 in Best Car Wax

Collinite 845 Insulator Wax

4.2

1 source$20.95as of Aug 1

Collinite 845 is the durability king of this group, a 1936-vintage carnauba-polymer wax that detailing forums trust for four-plus months of protection through salt and sun. Spread thin, it goes on easily and takes to a machine. You give up a little show-car warmth in exchange for protection nothing else here matches.

Strengths

— Exceptional durability, commonly reported at four to seven months of protection
— Carnauba-polymer blend holds up through winter road salt and summer heat
— Liquid formula is easy to wipe on and off, and is machine-friendly

Watch-outs

— Must be applied extremely thin or it becomes hard to buff off
— Shine is durable and reflective but less wet looking than a show carnauba
— Old-school formula benefits from a fully decontaminated surface first

$20.95 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Car Wax

Meguiar's Ultimate Liquid Wax

4.5

2 sources1 derived$29as of Aug 1

Most testers reach first for Meguiar's Ultimate Liquid Wax among synthetic liquids. It goes on and comes off without fuss, beads water for months, and includes the applicator and towel you need. Safe and forgiving, it gives long-lasting protection without the labor a paste demands.

Strengths

— Synthetic polymer formula spreads and wipes off easily, even in direct sun
— Strong, durable water beading that holds up for months between applications
— Includes a foam applicator pad and microfiber towel in the bottle

Watch-outs

— Not a true carnauba wax, so the warmth purists chase comes out cooler
— 16 oz bottle is pricier per ounce than spray waxes for the same coverage
— Needs a clean, decontaminated surface to avoid streaking

$29 · Buy at meguiarsdirect.com Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Collinite 845 Insulator Wax

Out-lasts every other wax here, including the Meguiar's Ultimate Liquid Wax and the spray-on Meguiar's Hybrid Ceramic Wax. It gives up some of the easy spray convenience of the Turtle Wax Hybrid Solutions Ceramic Spray Coating and a little of the warm gloss of the Chemical Guys Butter Wet Wax, but nothing in this group protects longer.

Meguiar's Ultimate Liquid Wax

More durable and easier to apply than the Chemical Guys Butter Wet Wax, but lacks the warm carnauba glow that pure-wax fans prefer. Where the Meguiar's Hybrid Ceramic Wax and Turtle Wax Hybrid Solutions Ceramic Spray Coating trade some longevity for spray-on speed, this liquid is the balanced middle ground. It does not match the Collinite 845 Insulator Wax on raw months-of-protection.

Specs side-by-side

Spec	Collinite 845 Insulator Wax	Meguiar's Ultimate Liquid Wax
Type	Carnauba-polymer liquid wax	Synthetic liquid wax
Size	16 fl oz	16 fl oz
Durability	4-7 months	Several months
Application	Hand or low-speed machine	By hand or DA polisher
Surfaces	Auto, marine, RV, motorcycle	Glossy paint, clear coat
Finish	High gloss, strong beading	High gloss, water beading
Best Practice	Apply thin on clean paint	—
Made In	USA, since 1936	—
Dimensions	2.52 x 2.52 x 7.99 inches; 14.56 ounces	—
Cure Time	—	Wipe off after slight haze
Includes	—	Foam applicator + microfiber towel

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