quote:That it is a "great oil" is obviously subject to debate by members of this board. Patman and I will tell you, and each new UOA supports our contention, that it will prove to be one of the great oils will see until the next technological advances come along. While I don't want to be redundant with palmerwmd, it has an outstanding pour point, is a nice thick 30W, and yet gives good fuel economy, has demonstrated that even with hard use, it doesn't thin out (see Patman's UOA on his Firebird that included 9 quarter-mile runs), and its wear numbers, supported by UOAs are superb. It comes in 0W30 only and is available in the US at Autozone only (so far). I would not mix it with anything else; you don't need to. Let me make this clear...are there other oils you can use to get long engine life, extended oil change intervals and superior overall lubrication performance? Absolutely. So what it comes down to is what do you like? If you like green oil that had its genesis in Europe, is probably heavily ester-fortified, and will give you superior lubrication performance, then GC is what you want. If only the last part, i.e. superior lubrication performance matters to you, pick any of the highly regarded oils you like (e.g M1) (I am not here to sell you on GC, just to answer your questions). It ultimately comes down to a partly intellectual, partly emotional choice. I've made mine and I am EXTREMELY satisfied with it. [ October 17, 2003, 01:31 PM: Message edited by: pscholte ]
Originally posted by Jim Spahr: I have heard a lot of discussion about the new German Castrol oil but have some questions. First I understand it is green in color, synthetic, found only at Auto Zone stores, has a red label, and is made in Germany. Sells for about 4.99 per qt. Why is it considered to be a great oil? What are the advantages over other oils? What weights does it commee in? Is it found anywhere else? Can it be mixed with other synth and dino oils?