STP Engine Degreaser Professional Series 500ml, Penetrates and Dissolves Heavy Dirt and Deposits, Easily and Quickly Restore your Engine's Performance for a Smoother Engine

Great value engine cleaning spray that cuts through baked on oil & grime. Recommended.

Have always used WD40 degreaser but lately Amazon's supply has been a bit erratic. So switched to this STP version instead. Straight out the can you can tell its more pungent and potent at shifting oils and greases, so I'm using this instead. Easy 5 star from me.

After putting it to the test, it's clear that this product is a competent and reliable solution for routine engine cleaning, though it's important to approach its claims with realistic expectations. Packaging and First Impressions: The 500ml aerosol can is standard for such products, easy to handle and direct. The "Professional Series" branding suggests a more potent formula, hinting at its ability to penetrate and dissolve grime. Effectiveness and Performance: When it comes to its core function – removing oil residue and grime – the STP Engine Degreaser performs commendably. It effectively breaks down the common oily film, light grease, and surface dirt that accumulate on an engine over time. Spraying it on and allowing it to dwell for a few minutes before rinsing certainly makes a noticeable difference, leaving surfaces cleaner and looking tidier. However, it's crucial to manage expectations. While the product does clean, it's not a miracle spray. Those hoping for their engine to look factory-fresh or "brand new" after a single application – or even multiple – will likely be disappointed. Heavily baked-on carbon, deep stains, or significant discoloration that has accumulated over years will largely remain. For truly stubborn deposits, some manual agitation with a brush will still be necessary to achieve the best possible results. Claims vs. Reality (Heavy Dirt & Restoring Performance for a Smoother Engine): The claim of penetrating and dissolving "heavy dirt and deposits" holds true for oil and general road grime, but less so for deeply ingrained, caked-on gunk that has become part of the engine's surface texture. Regarding the promise to "Easily and Quickly Restore your Engine's Performance for a Smoother Engine," this is where the link is more indirect. A clean engine certainly allows for better heat dissipation, makes it easier to spot leaks or other issues, and facilitates maintenance. In this sense, a degreased engine contributes to optimal performance and can indirectly lead to a "smoother" running engine by enabling better diagnostic work and preventative maintenance. However, the degreaser itself doesn't directly enhance engine mechanics to make it run smoother in a performance sense, its role is purely cosmetic and facilitative. Safety and Application: A significant advantage of this degreaser is its safety around electrical components. This is a major concern when cleaning modern engine bays, and STP has clearly formulated this product with that in mind, providing peace of mind during application. Its aerosol format makes it relatively easy to apply to various nooks and crannies. Conclusion: The STP Engine Degreaser Professional Series 500ml is a solid and effective product for routine engine bay maintenance and the removal of common oil residue and surface grime. It's easy to use, and its safety around electricals is a genuine benefit. For those looking to keep their engine bay presentable and facilitate easier visual inspections, it's a worthwhile purchase. However, if your goal is a show-car level deep clean that resurrects an old, heavily soiled engine to its original glory, be prepared for additional elbow grease and perhaps a dedicated multi-step cleaning process. It's a highly capable cleaner for what it does, but remember: it cleans, it doesn't miraculously restore.

I have used this product before and it is excellent.

I did comment on it being late but only by one day as for the product it works brilliant and seller was not at fault for it being late

Good

This is probably the best degreaser I have used for cleaning my bike chain , I found after giving the chain 1 coat and a good brushing, then applying a second to wash off the muck the Chain was nice and clean and ready for washing with snow foam, drying and re-coating with chain lube. Highly recommended and will buy again.

Says what it does on the tin, very good for removing oil. Have used it on my lawn mower to clean carburettor. Will be buying it again, when it runs out as you don't need a lot.

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After many many months of purchase used it recently when I had to change my timing belt .Its good and average not super but worth money, so you could trust for cleaning oil spills and other areas

Good

Car வைத்து இருக்கும் அனைவரும் இந்த spray கண்டிப்பாக வாங்க வேண்டும். முக்கியமா mechanic மூலம் பயன்படுத்த வேண்டும். Engine sound முற்றிலும் மாறி smooth ஆக ஓடும்.

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