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.

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🧼 Clean smarter, not harder — the pro’s secret weapon!

RUST PREP READY - Leaves zero residue, ensuring flawless paint adhesion every time.
ULTRA DILUTABLE FORMULA - Mix up to 10 parts water for cost-effective, potent degreasing.
TRUSTED BY PROS DI YERS - Part of the legendary 3-step rust prevention system from POR-15.
POWERFUL WATER BASED CLEANSER - Non-flammable and eco-friendly, cleans without harmful solvents.
VERSATILE SURFACE COMPATIBILITY - Perfect for canvas, vinyl, nylon, metal, and automotive parts.

POR-15 40104 Cleaner Degreaser is a powerful, water-based, non-flammable solution designed to remove grease, oil, and contaminants from a wide range of surfaces. Its ultra-dilutable formula (up to 10:1) delivers superior cleaning efficiency while preparing metal surfaces for optimal paint adhesion. Trusted by professionals and DIY enthusiasts alike, it’s an essential step in the renowned POR-15 rust prevention system.

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