My car:
1998 Ford SVT Contour
2.5L Duratech V-6
171,000 miles
MC 5w20 with FL820s
3000 mile OCI
Have used M1 5w30, 10w30, 0w40, TropArtic 5w30, Penz 5w30, GC. MC 5w20 gives me the best combo of performance, smoothness, quietness, and least amount of burn off.
Oh...K&N, then AFE air filter for...