Oh yess i'l mention it now the oil is brand new and I ran an engine flush beforehand also I swapped the reset valve with a known good, i'l check my oil pressure tomorow

Hi there, I'm new to this forum and I'm seeking help as I'v been unable to find any solution to my problem, searched the whole web looking for answer though I was unsucessfull. I Have a 2005 s40 t5 with the b5254t3 engine and it seams that for about 5 minutes after my car as reached operating temp i...