My car has only been run on non-synthetic oil for 130000 miles. Yes, suprisingly it is still running Ive heard baadddd things about switching. So I wanna know which is the best non- synthetic oil for my 7. Now I use Castrol GTX 10w-30. However I hear Halvoline is the best because of its base. Can someone clear this up ASAP thank you. Nate

 

i have no technical support for this, but the only non-syn ever mentioned in this forum seems to be the Castrol GTX...would you like fries with that sir?

 

Castrol is good...I'd stick with that or mobil (not mobil 1, just mobil)

 

If it ain't broke, don't break it. If you car has been running good for that long, why change anything you have been doing?

Just keep doing the same things!

 

THanks for the advice.