Long time lurker, 1st real post here.
I am in the process of desludging a 2001 VW Passat. The car has 163,000 miles, I've owned it for 10,000 miles (4 oil changes in that time) and it's had Castrol 5W-30 since new, however some OCI's have been obviously to long. The car had intermittent Low Oil Pressure warnings due to the sludge, and the breather hoses and VC exit ports were plugged. During this process I have removed and cleaned the VC's, Oil Pan and Oil Pump. I've also cleaned up the heads and cams, while still on engine. I also plan on replacing all of the breather hoses and vacuum lines. I also hope to stop all of the oil leaks, VC gaskets, CCT seals, Cam caps etc.
OK here is my dilemma. When I get this thing back together, I will have removed most of the major sludge, however there is still going to be some awfully dirty internals, bearings and journals, piston rings, intake etc. What would be a good choice for a 1st oil, with cleaning in mind? How about a cleaner/additive? Right now I am thinking of using Rotella T6 5W-40 or M1 High Milage 5W-30 with a quart of Marvel Mystery Oil. (5.4L sump). I plan on changing the filter (Wix) when I see the oil becoming slightly dirty then again when it starts to turn a dark brown. Hoping to put about 2000 miles on the 1st oil. I am then debating between M1 0W-40 for import cars, M1 5W-30 High Millage and Rotella T-6 as the go to oil. Do I have a good plan? What would you put in 'er? I know that Auto-RX is a fan favorite as well, but I do have the MMO handy.
Thanks in advance for your time.
BTW, just what exactly is a piston soak?
I am in the process of desludging a 2001 VW Passat. The car has 163,000 miles, I've owned it for 10,000 miles (4 oil changes in that time) and it's had Castrol 5W-30 since new, however some OCI's have been obviously to long. The car had intermittent Low Oil Pressure warnings due to the sludge, and the breather hoses and VC exit ports were plugged. During this process I have removed and cleaned the VC's, Oil Pan and Oil Pump. I've also cleaned up the heads and cams, while still on engine. I also plan on replacing all of the breather hoses and vacuum lines. I also hope to stop all of the oil leaks, VC gaskets, CCT seals, Cam caps etc.
OK here is my dilemma. When I get this thing back together, I will have removed most of the major sludge, however there is still going to be some awfully dirty internals, bearings and journals, piston rings, intake etc. What would be a good choice for a 1st oil, with cleaning in mind? How about a cleaner/additive? Right now I am thinking of using Rotella T6 5W-40 or M1 High Milage 5W-30 with a quart of Marvel Mystery Oil. (5.4L sump). I plan on changing the filter (Wix) when I see the oil becoming slightly dirty then again when it starts to turn a dark brown. Hoping to put about 2000 miles on the 1st oil. I am then debating between M1 0W-40 for import cars, M1 5W-30 High Millage and Rotella T-6 as the go to oil. Do I have a good plan? What would you put in 'er? I know that Auto-RX is a fan favorite as well, but I do have the MMO handy.
Thanks in advance for your time.
BTW, just what exactly is a piston soak?