Hi Käferfreunde, I have finished my engine so far and would like to venture a test run. Data of the engine: 1776 ccm Scat C25 camshaft compaction approx. 9.0 oil pump with in/outlet and oil filter serial carburettor Would like to run the engine on a carrier to see if everything fits. Thought with the test run at ignition time setting and a short inlet phase of 10-15 min at 2000 rpm. I don’t want to open an oil discussion here but “only” know what is going on for the inlet phase Would you like to drive the engine later with 5W-40 Synt.. But I heard something, that you should use a 10W-40 partlyynt. and without MOS2 to not extend the inlet phase even further. Have the following oil there: 10W-40 partial synnt. from Total 10W-40 partial synnt. Light running oil with MOS2 from Liqui Moly 5W-40 Synt. from Total 125ml MOS2 Additv from Liqui Moly I don’t know if it makes a big difference at all, but I ask now just, maybe yes j emand experience with it or can justify why one is better at the beginning than the other for the later operation. Would I be pleased with answers. Thank you and greetings Philipp