Hey all, my R33, 96MDL does the same thing, when driving around town its like 3-4 and when idleing its newere between 2-1.5. I used cheaper oils before and have now gone to Mobil1 10-30.. Maybe try changing oil back to 15-50, Maybe its common in sum skylines, either dodge gauge or lazy oil pump, Plz let me know how you go as mine is the same. Cheers