He did pull my oil pan when he found the sludge, I don't know how you would do it otherwise.....unless you can pull off the valve cover an tell.

My Seafoam experience exposed a lot of issues with my truck, so be careful. Apparently all my seals were sealed and working because of the build-up on them. The seafoam treatment cleaned all this out and all my seals began leaking......but I guess this was a blessing because I had no idea about the condition of the internals of the motor. I actually found an honest mechanic that knows his stuff about foreign motors.