Hello, I own a W123 280 TE. This was rebuilt in 2000 from several vehicles. Carrosserie, interior equipment in absolute good condition. The engine had licked oil, I had it now for the exchange of all seals in the workshop. Now it was established that the engine probably has a bigger, damage. I play with the thought to invest in an exchange engine, as the rest of the vehicle is as said absolutely worthy of maintenance. My question also in knowledge of the high fuel consumption of the 280 engine: – Can one convert from the petroler to diesel: if yes: has someone experience with it: which engine, cost? – Could one also integrate in the 123er engines of the new generation ? if yes: which ? Cost? Thank you I would be pleased if only answers to the topic were made and no fundamental discussion about such an exchange comes up…