What do you guys think about Royal Purple oil?

 

I purchased a JVC HD Radio for my other car (a Firebird) from these guys - it was defective out of the box. They also sent me the wrong installation kit and were slow as molasses on a February morning in Minnesota in rectifying the problem. I eventually got disgusted with them and sent the whole mess back to them, but they got me for "restocking" and other fees, to the tune of about $50.00. I was much happier buying from Crutchfield, even if it cost a few bucks more. Sonicelectronix is basically an undesireable outfit to do business with. CAVEAT EMPTOR!!!