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Old 04-17-2012, 10:37 AM   #1
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Drives: 2010 Mazdaspeed 3
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Product Review: Sonus Trim & Motor Kote vs. my Mazdaspeed3

Since 2001, Sonus has produced precise car detailing solutions for discerning car owners. From its modest roots creating add-on products for P21S and Klasse, Sonus has grown to become one of the most complete car detailing product lines in the world, with customers in more than 20 counties.

SONUS Trim & Motor Kote: Engine & Trim Acrylic Sealant

Sonus Trim & Motor Kote is an acrylic based sealant/coating that is sprayed on and allowed to dry. As the sealant/coating dries it adheres to the surface by penetrating and bonding. This is a silicone free, long lasting sealant.

The bottle is features 16.9 fl. oz. (500 ml) of product and a high atomization trigger sprayer.

The directions are clearly labeled on the back:

Copy from back label:
Sonus Trim & Motor Kote is a water-based, durable, non-flammable, undercarriage and trim dressing that is boosted by Polycharger. It is safe for all engine compartment surfaces, including aluminum, rubber, plastic, anodized metal, and painted surfaces.
Sonus Trim & Motor Kote is an ideal solution for large areas of plastic cladding, including truck bed liners, rocker panels, wheel well liners, and black plastic valances.

Directions (label copy):

Thoroughly clean and dry engine or trim to be treated. Not recommended as a tire dressing. Shake container well before use.
Sonus Trim & Motor Kote dries to clean, dust resistant satin finish. Spray two light coats, allowing 15-20 minutes drying time between coats. DO NOT WIPE. Allow one hour of final drying time before use. Remove overspray with a a damp towel before product dries.

The first step in the directions is to clean the engine bay (and dry) thoroughly.

My Mazdaspeed 3's engine wasn't too dirty but it did have a light covering of soot and dirt.

The inner-cooler grate had also picked up a some visitors.

After covering sensitive electronics and the air intake I cleaned the engine bay. Optimum Power Clean, diluted 3:1 with water, was sprayed liberally on all exposed surfaces. Then I used a Montana Boar's Hair Wheel Brush and Wheel Woolie to clean the area's with Ultima Paint Guard Wash. I than rinsed the engine thoroughly and dried using my trusty Metro Vac N' Blo and several All Purpose Microfiber Towels.

The 2.3L 4 after being blown and wiped dry. I closed the hood and ran the engine for 15 minutes to ensure everything was completely dry and would not interfere with the application of Sonus Trim & Motor Kote.

Application: Coat 1

After shaking the bottle well, I applied a light coat over the engine compartment. I found that applying from 12"-18" inches away in a sweeping motion provided the most even and thorough coverage. You can see teh high atomization (fine) sprayer at work. It took approximately 10 sprays to cover the entire engine.

The battery box provides a good example how the surface looks immediately after application.

Application: Coat 2

The directions call for a second coat 15-20 minutes after the first coat. At this point the first coat had dried in most places and a light 'dusting' mist was all the was required. It only took four sprays to ensure even coverage on the second coat (for me).

The second coat being applied.

The battery coat after receiving the second coat. You can see that the first coat had dried fairly thoroughly. A second, light mist covered any voids.

30 Minutes after Coat 2.

The directions for Sonus Trim & Motor Kote clearly state DO NOT WIPE. As Dave pointed out in his excellent review (also required reading for anybody using this product): , you have to this product set up on it's one.

After 30 minutes parts with a pebble or fine texure appeared completely dry and evenly coated.

However areas with a smooth texture (including rubber hoses and painted surfaces) were still wet. Again do not wipe Sonus Trim & Motor Kote, allow it to dry on it's own.

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Old 04-17-2012, 10:38 AM   #2
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1 Hour after Coat 2

One hour after the second coat was applied Sonus Trim & Motor Kote continued to dry.

The smooth surfaces are still 'wet' but look much nicer and far more even. The gloss has toned down considerably.

Most of the textured black trim has an even, dry appearance.

Although some high spots (wet looking) still remain.

2 Hours after Coat Two: FINAL PICTURES

After two hours the majority of Sonus Trim & Motor Kote had fully dried and cured to a beautiful, rich and dark finish. There were still some spots (on smooth trim like hoses) that hadn't completely settled, but were almost all the way there.

Here are the final after pictures.

The Sonus Trim & Motor Kote dried to a very nice, rich finish.

The high-spots (previous picture of the same area) evaporated/cured completely leaving an uniform finish.

The battery cover box.

Even on paint, aluminum, and clear plastic Sonus Trim & Motor Kote left a nice shine. The A/C hose (lower right) shows the shine left on smooth rubber.

A final shot of the engine bay.

Update: Day 2

I want to update this thread to give realistic results. After day 1 I opened up my hood to check on the progress. The engine, despite putting on about 50 miles last night, was just as clean and actually looked more even/better. There was no dust or dirt accumulation.

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Old 04-17-2012, 10:39 AM   #3
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And remember a freshly detailed engine adds at least 20 horsepower.* Which my car desperately need on a Camaro forum!!!!!

*Disclaimer: Cleaning your engine does not add horsepower. Don't drive like I do.


The Sonus Trim & Motor Kote still look GREAT, despite nearly 1000 miles through a couple of rain storms. I had the hood up yesterday and almost no dust settled on the motor.

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Old 05-14-2012, 10:26 AM   #4
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SONUS Trim and Motor Kote: 2 month update!

After two months I proud to report that this amazing product is still going strong. My engine is definately getting dirtier and has a light coat of dust on it (it also has been 5k since I first applied this product).

Next I will give the engine a light batch with some mild car soap and see how SONUS Trim & Motor Kote holds up. So far I am amazed!

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Old 06-20-2013, 01:05 PM   #5
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Looks good. I ordered one on Amazon and I'll give it a try.
Thanks for sharing!!!

BEE used to have
MyLink with NAV
Black 10 spoke FR41 wheels (ZL1 Replica)
Roto-fab CF CAI / Scoop and Washer Bottle Relocation KIT
Vmax yellow painted ported TB
Solo HF Cats with Kooks 2.5" catback
SLP Replica Spliter, CF Stripes and CF bowties
Hawk ceramic brake pads
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Old 06-20-2013, 01:35 PM   #6
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Looks good Todd, nice review and beautiful engine bay.
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Old 10-21-2013, 09:27 AM   #7
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Just a small update... Ultimately, I got about 4 months of total looks/protection before having to reapply. That said... Sonus Trim & Motor Kote has become my go to product for engine detailing!
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