So I decided I wanna change all the oils/lubricants in my 98 gts (30,000mles). I did a search on here and couldn't find a definitive answer on which brand of lubricants are best to use. I dont care about price I just wanna put the best stuff in the car. Whats the best between mopar,royal purple, redline, & ams oil? also mobil 1 or royal purple for engine oil?thanks