Automotive engine flush that removes harmful sludge, neutralises acids and protects engine internals during and after cleaning. STP Engine Flush helps rejuvenate seals and can stop or prevent minor oil leaks, leading to smoother running. Is this treatment the right maintenance step for your petrol or diesel engine?
⚡ At a Glance
- • Cleaning Power: Loosens and removes harmful sludge and deposits while neutralising harmful acids.
- • Best for: Owners of petrol and diesel engines who want to refresh seals and reduce minor oil leaks
- • Not ideal for: Engines with major oil leaks or mechanical damage that need repairs rather than a flush
Formulation removes sludge and neutralises acids while protecting seals during and after flushing. Suitable for petrol and diesel engines and supplied as a 450 ml treatment.
Seal rejuvenation - with deposit-dissolving action
Formulation targets oil-borne sludge and deposits to free stuck seals and restore flexibility. Neutralising acidic residues reduces chemical stress on rubber and metal surfaces.
Improved seal performance can reduce minor oil seepage and produce smoother running after a flush. Users report rejuvenated seals and noticeable improvements in engine behaviour.
Reduces minor oil leaks - thanks to seal-conditioning properties
Seal-conditioning action works by softening and reshaping seal surfaces as deposits are removed, improving contact at gaskets and joints. Clearing surrounding deposits helps seals reseat more effectively.
Minor leaks often stop or slow following treatment, making it a useful maintenance step prior to or after an oil change. Suitable for addressing seepage rather than major gasket failure.
Protects during and after flushing - with acid-neutralising action
Neutralisation of harmful acids limits corrosive attack while deposits are dislodged, reducing chemical wear during cleaning. Protective effects help prepare metal surfaces for fresh oil.
Engine internals face less chemical stress during cleaning, lowering the chance of further deterioration. Helpful for maintaining engine condition between services.
✨ The 4 Key Reasons for STP Engine Flush
- Made in the UK - Ensures local production with clear traceability and standards
- User-reported long-lasting results - Keeps seals healthier for extended maintenance intervals
- Useful before oil change - Prepares engine for fresh oil by clearing deposits
- Neutralises acids - Reduces chemical wear to extend internal component life
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: STP
- Product Type: Engine Flush
- Volume: 450 ml
- Suitable for: Petrol and diesel engines
❓ Frequently Asked Questions
Q: Is this suitable for petrol and diesel engines?
A: Yes. The formulation is intended for use in both petrol and diesel engines.
Q: Will it stop oil leaks?
A: Designed to stop or prevent minor oil leaks, with user feedback indicating effective leak reduction and seal rejuvenation.
Q: Where is it manufactured?
A: Proudly made in the UK.
🏆 Our Verdict
Suitable for owners of petrol and diesel engines who want to refresh seals and address minor oil seepage. Neutralising acids and removing sludge while protecting seals is the core benefit. Delivers long-term value through reduced leaks and improved seal life, helping engines run smoother between services.
