Then in good conscience 1.9sdi, runs on everything, I suppose on heated lard too, I personally tested on fresh and reworked rapeseed, reworked engine and fuel .
The discussion revolves around the feasibility of using used french fry oil as fuel in various diesel vehicles, particularly focusing on the Polonez with an R4 engine and the Mercedes W123 D. Participants express concerns about the legality and practicality of using such oil, noting that while it may not be illegal to use fry oil, it can lead to issues during roadside inspections. The consensus suggests that older diesel engines, especially those with simple injection systems and without turbochargers, are more suitable for this type of fuel. Recommendations include using Mercedes models due to their robust design and compatibility with vegetable oils. Filtering methods for the oil are also discussed, emphasizing the need for proper heating and filtration to avoid damage to the engine components. Summary generated by the language model.