Low oil pressure??
Originally Posted by transam5.7lt1
How dare you call BS on me, I am saying synthetic oils don't work well in high mileage motors from experience. I tried synthetic oils, different brands and all they did was create oil leaks... I am telling you not just from my point of view or expiernce with them, but from the stand point of many friends that had similar symptoms from using synthetic oil. Don't take it personal, but I and many do believe that synthetic creates problems in high mileage engines. By the way, we are in Texas, its always hot down here, maybe in a colder environment, sythetic would work for us......for now... we'll stick to regular oil at 3,000 mile intervals...
^^ Pretty much sums it up right there. Synthetics only make leaks on your car that are there worse or more visible. That alone doesnt mean a synthetic is no no on high mileage motors. Do some used oil anaylsis's. See what kind of wear you get with your choice convential, then try some recommended synthetics. the Days of 3000 Mile oil changes (exemptions, exclusions, etc) are fading. Most oils (even convential) these days can go past 3k OCI. Just because the oil is dirty looking doesnt mean it's time to change it..
TECH Enthusiast
Joined: Nov 2005
Posts: 520
Likes: 0
Originally Posted by 1pissedoffliter
^^^^^^^^^^^^^^^^^^^^^^^^^^^^This is to ABOATGUY, how much more clear can I state this fact. And let me know how bearing wear can drop oil pressure. If it does then it will only be just a smige. Just because more oil can travel through the bearings. But not as much as he stated. I mean a couple thousandths more clearance than factory, ya done spun a bearing.
You can have a .001 or more wear and not spin a bearing however, a 001" increase in clearance can cause large reduction in oil pressure.
I just don't understand how you can state that bearing wear will not drop oil pressure when every manual I've used for engine maintenance/repair always has worn bearings on the trouble shooting list.
I don't want to start a flame war either. If you have any scientific, or expert documentation that states worn bearings will not cause low oil pressure please share it .
mike
