GREGORIUS — Blog / Knowledge Base https://gregorius.pl/en/blog/ Guides on cylinder liners, valve seats and engine machining. en Valve Seats for LPG Engines — Why Standard Ones Are Not Enough https://gregorius.pl/en/blog/valve-seats-for-lpg-engines/ https://gregorius.pl/en/blog/valve-seats-for-lpg-engines/ After an LPG conversion valves run hotter and without the "lubrication" of petrol. See why seats designed for gas are needed. Guide Wed, 10 Jun 2026 00:00:00 GMT Cylinder Liner Honing — What It Is and When You Need It https://gregorius.pl/en/blog/cylinder-liner-honing-explained/ https://gregorius.pl/en/blog/cylinder-liner-honing-explained/ Honing gives the liner surface the right roughness and geometry. We explain the cross-hatch pattern and why it determines engine durability. Technology Tue, 02 Jun 2026 00:00:00 GMT Cylinder Regeneration vs Replacement — Which Pays Off https://gregorius.pl/en/blog/cylinder-regeneration-vs-replacement/ https://gregorius.pl/en/blog/cylinder-regeneration-vs-replacement/ Regeneration can be cheaper, but it is not always possible. We compare both options in terms of cost, durability and risk. Guide Mon, 25 May 2026 00:00:00 GMT Symptoms of Worn Cylinder Liners — How to Spot Them https://gregorius.pl/en/blog/symptoms-of-worn-cylinder-liners/ https://gregorius.pl/en/blog/symptoms-of-worn-cylinder-liners/ Blue smoke, disappearing oil and a drop in compression are classic signs of liner wear. See how to recognize them and what to do next. Diagnostics Tue, 12 May 2026 00:00:00 GMT Dry vs Wet Cylinder Liners — Differences and How to Choose https://gregorius.pl/en/blog/dry-vs-wet-cylinder-liners/ https://gregorius.pl/en/blog/dry-vs-wet-cylinder-liners/ Dry or wet liner? We explain the differences in design, cooling and fitting, and help you choose the right one for your engine. Guide Wed, 08 Apr 2026 00:00:00 GMT