Originally Posted by Nekoawag04
could it be because i have 10w 30 instead of 5w 30 like it is supposed to?
As to this, No. Especially with you living in texas. a 10W-30 oil would be fine where you live. (I am of course assuming that the temperature rarely ever drops below 0 degrees.)
The only oil related problem I could think of with that would be if the previous owner was using a full synthetic oil, and you are using a non-synthetic blend. And the only problem in doing this, is it could cause leaks. (It was a lot more of a problem to do this a while back.) So if your car isn't leaking, I don't think your problem has anything to do with the oil that is in it.
On a side note, does it make the noise when you are in any gear over 3000 rpm, or just high gears?
One thing you could try (some people don't recommend it, but I have never run into a problem, it is up to you if you choose to) On your next oil change run to your nearest gas station and pick up like 15 cents of diesel fuel (you don't need much more than a cup full). with your car cold, pour the diesel fuel into the oil. Run your car at idle for about 5 minutes ( the diesel fuel acts like a cleaning agent and breaks up anything that may be clogged.) then just shut the car off and drain your oil (be careful with pan ready! It tends to shoot out at an odd angle)
This is the process that we go through when we are going to be going into the head and interiors of the engine and it works great, it may help clean up your engine and eliminate oil as your problem.