I am a proud owner of an 87 costume duluxe sporting a 350 tbi 3/4 ton. I've owned it for a month an a half.
I put a 40 wieght oil in a region that averages tempetures ranging from mid 40's to 90's during winter.
I have had no previous problems till recently.
I am wondering what could have cost a sudden tapping noise comming from my block. me and my wife think it may be the lifters due to the change in oil weight.
I'm planning to change the oil back to 10w30 but I was also told that engine build up could accumulate at the bottom pan of engine. since i plan to change the oil and not the filter, would it be wise to take the pan off to clean it? and if so, can I leave the existing oil filter for next oil change?
Do trucks like mine have a filter in the oil pan? I would appreciate your input. Happy new year to you all.