Will this remove dried on road tar off of my fifth wheel?

As for this product, I cannot say. I do know that WD-40 works well for removing dried tar from vehicle surfaces.

Can I use this in a sonic cleaner to wash small engine parts?

I'm sure you probably could! I use this degreaser for everything! Very, very potent stuff!!!

can i use por-15 40101 cleaner degreaser in an ultrasonic cleaner to degrease small engine parts. also would you use it full strength or dilute it?

I swear by POR-15 degreaser, works better then any degreaser I have ever used! I'm sure you can use it in a ultrasonic cleaner without any problems, I would still delute it, even deluting it, it strips the grease off of anything, make sure you are wearing gloves when using it, pretty potent stuff! Maybe try deluting it first, if your not getting desired cleaning go full strength!

I splattered warm Crisco on my cars R fender, will this affect the finish and remove the grease?

This is a strong grease cleaner/remover. I would dilute it to 15 parts water to 1 part cleaner. The cleaner will remove wax. If you are not sure contact the manufacturer.

Por 15 40104 Cleaner Degreaser 1 Quart | Desertcart South Africa

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R1355

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Clean smarter, not harder — unleash pro-level shine every time!

POWERFUL ALL IN ONE CLEANER - Effortlessly removes grease, oil, mildew, rust stains & more in a single application.
SAFE ECO FRIENDLY FORMULA - Water-based, non-flammable, chlorine-free, and cruelty-free for peace of mind.
PROFESSIONAL GRADE CONCENTRATE - Dilute with hot water for heavy-duty cleaning on automotive and marine parts.
VERSATILE SURFACE COMPATIBILITY - Perfect for engines, fuel tanks, vinyl, fiberglass, wood, and painted surfaces.
TRUSTED BY EXPERTS ENTHUSIASTS - Top-rated with 4.6 stars from over 1,100 reviews—join the clean machine community.

POR-15 40104 Cleaner Degreaser is a concentrated, industrial-strength, water-based formula designed to remove grease, oil, mildew, rust stains, and more from a wide range of surfaces including engines, fuel tanks, vinyl, and fiberglass. Non-flammable and eco-conscious, it offers professional-grade cleaning power without harsh fumes or residues, making it a top choice for automotive and marine maintenance.

Specifications

ASIN	B00O4U3RD4
Best Sellers Rank	#52,150 in Automotive ( See Top 100 in Automotive ) #47 in Car Engine Cleaners & Degreasers
Brand	POR-15
Brand Name	POR-15
Contains Liquid Contents?	Yes
Customer Reviews	4.6 out of 5 stars 1,147 Reviews
Global Trade Identification Number	00051491401043
Item Form	Liquid
Item Volume	32 Fluid Ounces
Item form	Liquid
Item volume	32 Fluid Ounces
Material Features	Cruelty Free
Material Type Free	Chlorine Free
Material features	Cruelty Free
Model Number	40104
Part Number	40104
Scent	Unscented
Special Features	Concentrated
Specific Uses For Product	Floor
Specific uses for product	Floor
Surface Recommendation	Metal
UPC	051491401043

Reviews

R**T

Réparation réservoir essence

Dégraisse et dérouille bien

13.02.2026

L**D

Works great

It works great for the price just wish the bottle was bigger for that price.its 6he second one I'm buying

30.05.2024

V**2

Exceeded My Expectations

I purchased the POR-15 Cleaner Degreaser to prep the frame of my car before painting, and it worked better than expected. It cut through grime, grease, and buildup with ease, leaving the surface perfectly clean and ready for paint. The results were impressive, and it made the next steps in the process much smoother. Highly recommend this for anyone doing restoration or paint prep work—it really delivers!

12.07.2025

M**Y

Works

Seems to work. Not a professional.

6.11.2024

F**L

Farm girl

We are in the process of using Por 15 on an old tractor gas tank and so far it is working GREAT. Looking forward to the finished product.

20.11.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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