Dearest Bitogers
I am just beginning my second AutoRX "rinse" cycle using 10w40 Castrol GTX Dino oil. On both ARX "clean" cycles and the one previous rinse, the oil remained new looking until about 500 miles in, then rapidly got very black.
The car consumes oil, and I believe the P.O. may have contributed to sludging by delaying the OCI in favor of just topping up, and then using too thin an oil. Not that 5w30 Pennzoil year round is a bad oil, just that it may be a little thin for the particular German engine. From what I have seen of UOAs posted I imagine the TBN of that oil in long use would be way low.
I saved the oil filter and when I figure out how to open it without causing an enormous mess, I will look for sludginess. Any tips?
My basic question is given the expectation that there is still cleaning to do, is there an advantage to adding Lube Control to the dino rinse oil? Any disadvantage? I have been running FP for about 3 months and am itching to use my LC.
Also, is there any advantage to adding Seafoam or MMO to the oil a hundred clicks or so before the next oil change?
Basically wondering if adding something with a little more solvency during the ARX rinse cycle would be helpful, harmful or neutral.
I am just beginning my second AutoRX "rinse" cycle using 10w40 Castrol GTX Dino oil. On both ARX "clean" cycles and the one previous rinse, the oil remained new looking until about 500 miles in, then rapidly got very black.
The car consumes oil, and I believe the P.O. may have contributed to sludging by delaying the OCI in favor of just topping up, and then using too thin an oil. Not that 5w30 Pennzoil year round is a bad oil, just that it may be a little thin for the particular German engine. From what I have seen of UOAs posted I imagine the TBN of that oil in long use would be way low.
I saved the oil filter and when I figure out how to open it without causing an enormous mess, I will look for sludginess. Any tips?
My basic question is given the expectation that there is still cleaning to do, is there an advantage to adding Lube Control to the dino rinse oil? Any disadvantage? I have been running FP for about 3 months and am itching to use my LC.
Also, is there any advantage to adding Seafoam or MMO to the oil a hundred clicks or so before the next oil change?
Basically wondering if adding something with a little more solvency during the ARX rinse cycle would be helpful, harmful or neutral.
