well first i'd like to say howdy- im a noobie..
My questions stem from my jeep wrangler (97 model year) but with a rebuilt 4.0L that has about 10K miles. I ran synthetic through it for a few thousand miles but it began leaking so i swapped over to dino with no problems. My pressure seems to be low to my standards... at cold startup i get 40-42, cold driving 40-45, warm i get about 20 but the more i drive the lower my idle goes... These figures are the with the current temps ranging from 25-60. In the summer when the temps are between 80-100 with high humidity i get bout 40 on initial start, then like nothing at idle and about 20 driving. Could this be a sensor issue? This is dealing with 10w-30 oil but when swapped into 20w-50 i dont have oil pressure concerns. Should I run 20w-50 or seek other options? Ive been running the STP S8a filter and have tried other filters but havent seen a difference in pressure. For oil ive been running the mobil 1 dino 10W-30 but at next change would like to swap in the 20w-50.... good idea or not? Do rebuilt engines have looser tolerances? Is that why you shouldnt run dino in em? Thanx and sorry for the multiple questions
My questions stem from my jeep wrangler (97 model year) but with a rebuilt 4.0L that has about 10K miles. I ran synthetic through it for a few thousand miles but it began leaking so i swapped over to dino with no problems. My pressure seems to be low to my standards... at cold startup i get 40-42, cold driving 40-45, warm i get about 20 but the more i drive the lower my idle goes... These figures are the with the current temps ranging from 25-60. In the summer when the temps are between 80-100 with high humidity i get bout 40 on initial start, then like nothing at idle and about 20 driving. Could this be a sensor issue? This is dealing with 10w-30 oil but when swapped into 20w-50 i dont have oil pressure concerns. Should I run 20w-50 or seek other options? Ive been running the STP S8a filter and have tried other filters but havent seen a difference in pressure. For oil ive been running the mobil 1 dino 10W-30 but at next change would like to swap in the 20w-50.... good idea or not? Do rebuilt engines have looser tolerances? Is that why you shouldnt run dino in em? Thanx and sorry for the multiple questions