New update on my engine/oil issues. I post in this forum because it is a Euro engine and this thread is a continuation of a previous one here: http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=851595&fpart=1
I recently finished a 4800 mile run with Mobil 1 5W-40 Turbo Diesel Truck (CJ-4 version). Well, today I checked the valve cover area and PCV system, and found that the oil let me down. Varnish has again formed in these areas. I did not mean to run the oil this long but it just happened. I meant to go about 3700 miles, which with some other oils (like Amsoil ACD), no varnish formed anywhere.
So, I'm quite annoyed and not impressed with M1 5W-40 TDT CJ-4. It is pathetic that 5000 miles is too much to ask of a modern synthetic oil in a modern VW engine, driven in a normal manner. ACEA should use this engine to test long drain oils...it's an oil-killer.
Red Line 5W-30 is now in the engine. It will be interesting how good this oil does in my engine.
I recently finished a 4800 mile run with Mobil 1 5W-40 Turbo Diesel Truck (CJ-4 version). Well, today I checked the valve cover area and PCV system, and found that the oil let me down. Varnish has again formed in these areas. I did not mean to run the oil this long but it just happened. I meant to go about 3700 miles, which with some other oils (like Amsoil ACD), no varnish formed anywhere.
So, I'm quite annoyed and not impressed with M1 5W-40 TDT CJ-4. It is pathetic that 5000 miles is too much to ask of a modern synthetic oil in a modern VW engine, driven in a normal manner. ACEA should use this engine to test long drain oils...it's an oil-killer.
Red Line 5W-30 is now in the engine. It will be interesting how good this oil does in my engine.