Hi new poster here! I've read this forum for quite some time. It's great!
Anyway, my wife and I purchased a 2000 Pontiac Grand Prix GTP in July. We took a 2000 mile trip the next weekend. I had no idea when the oil had been changed, so about 3 weeks ago I went ahead and changed it.
The car has 41,000 miles on it and it is in great shape and runs awesome!! I have no idea what kind of oil was in the car,but it had an AC PF 47 filter on it. I switched to Mobil 1 10W30 synthetic and a Wix filter based on what I have read here and several other automotive forums such as www.clubgp.com and www.ls1.com
My wife has done most of the driving since then. We have gone 500 miles or so since the switch to the M1 syn. I noticed for the first time tonight that the engine noise seemed noticeably louder at idle . It seems the engine was much quieter with whatever was in there before. In my opinion,The engine is clearly more audible inside the car now,and it sounds louder from the outside too. It's not really loud, but it is louder. I asked my wife if she thought it was louder since she drives the car most of the time. She said it sounded exactly the same to her. She does know to watch and listen for trouble, but I think it's changed. Maybe it's just me, but I don't think so.
I read that Mobil 1 might do this, but I went ahead and tried it anyway. Once again maybe it's just me,but it does seem louder. It's not a cold slap issue either. It does it when the engine is warm too. I know this doesn't necessarily hurt anything,but it is kind of disapointing. I was going to switch to M1 from Pennzoil synth. in my Formula, but I might not now.
99% of the time we have the stereo on ,so we can't hear the engine anyway.I just happened to hear it yesterday before I turned the radio on. The car still runs fine.
Anyone else who has a Grand Prix have this problem with M1?? I hate to sound anal, but this kind of stuff bothers me. I know this site is full of folks just like me too.
[ September 08, 2003, 03:59 AM: Message edited by: Racerjk ]
Anyway, my wife and I purchased a 2000 Pontiac Grand Prix GTP in July. We took a 2000 mile trip the next weekend. I had no idea when the oil had been changed, so about 3 weeks ago I went ahead and changed it.
The car has 41,000 miles on it and it is in great shape and runs awesome!! I have no idea what kind of oil was in the car,but it had an AC PF 47 filter on it. I switched to Mobil 1 10W30 synthetic and a Wix filter based on what I have read here and several other automotive forums such as www.clubgp.com and www.ls1.com
My wife has done most of the driving since then. We have gone 500 miles or so since the switch to the M1 syn. I noticed for the first time tonight that the engine noise seemed noticeably louder at idle . It seems the engine was much quieter with whatever was in there before. In my opinion,The engine is clearly more audible inside the car now,and it sounds louder from the outside too. It's not really loud, but it is louder. I asked my wife if she thought it was louder since she drives the car most of the time. She said it sounded exactly the same to her. She does know to watch and listen for trouble, but I think it's changed. Maybe it's just me, but I don't think so.
I read that Mobil 1 might do this, but I went ahead and tried it anyway. Once again maybe it's just me,but it does seem louder. It's not a cold slap issue either. It does it when the engine is warm too. I know this doesn't necessarily hurt anything,but it is kind of disapointing. I was going to switch to M1 from Pennzoil synth. in my Formula, but I might not now.
99% of the time we have the stereo on ,so we can't hear the engine anyway.I just happened to hear it yesterday before I turned the radio on. The car still runs fine.
Anyone else who has a Grand Prix have this problem with M1?? I hate to sound anal, but this kind of stuff bothers me. I know this site is full of folks just like me too.

[ September 08, 2003, 03:59 AM: Message edited by: Racerjk ]