What are your opinions about the best dino oil widely (not stuff like Kendall and such) available?? Valvoline, Mobil, QS, Exxon, Super-Tech, Pennzoil,etc.??
Which one would you buy?
[ December 01, 2002, 07:59 PM: Message edited by: Alex D ]
quote:Gotta disagree on only those two oils as being the best,just because they have Mo does not mean they are the best OTC SL oils available.Maybe they sell more than other oils but there are some that are their equals in going the distance and protecting for that distance easily IMO
Originally posted by Patman: This topic comes up a lot actually, but general consensus is that for the commonly available dino oils, Castrol GTX and Pennzoil both work very well.
quote:What about Conoco's Hydroclear motor oil? Their Group II and Group II+ base oil comes from the Lake Charles refinery, which is their joint venture with Pennzoil (Excel Paralubes). I've used Hydroclear in the past and found it to be an excellent oil with an extremely good detergent package. [ December 01, 2002, 08:41 PM: Message edited by: XHVI ]
Originally posted by Patman: It's not just because they have moly that I recommend them though, but also because we've seen good oil analysis results on them. And Pennzoil's group 2+ base oil is probably the best base oils of the lower cost oils. So it could handle slightly extended intervals well.
quote:Well I have seen some good analysis using Chevron SL that has well over 3k miles.I also saw my motor kill Pennzoil early,,group II does not make or break a oil,it's the additive package and the motor it"s used in and I IMO think some Drive Clean and Phillips Turbo along with some others warrant a look at. Motorcraft and Conoco Hydroclear,Mobil Drive Clean for just a few
Originally posted by Patman: It's not just because they have moly that I recommend them though, but also because we've seen good oil analysis results on them. And Pennzoil's group 2+ base oil is probably the best base oils of the lower cost oils. So it could handle slightly extended intervals well.
quote:It's a myth, you can switch back and forth every second interval and it wouldn't hurt the engine. I wouldn't recommend doing that a lot though, each time you switch brands of oil, the next oil will oxidize just a bit faster because of the different additives mixed in there. Which is why if you do extended intervals, always wait until the 2nd interval with the same oil before doing it.
Originally posted by 94 formula: Hmm well what would be the best oil to use with auto rx or an engine cleaner of that sort? Also is the idea of switching from synthetic to mineral oil then back to synthetic oil being a bad thing just a myth?
quote:That's exactly it! And I did see a major improvement on my before and after results, even with the second interval being a longer 3300 mile interval (the first interval was 2400) For instance, iron came down to 5ppm from 15, lead down to 14 from 19, oxidation down to 9% from 40% and sulfur down to 0% from 27%.
Originally posted by Jason Troxell: I think he did it to compare analysis before and after with same oil to have proof that RX actually worked. I am doing it because I have to run dino after the treatment to stop any leaks...
quote:I've seen no data that mixing oil causes increased oxidation levels. In my opinion, that's a myth started by oil salesman to discourage changing oil brands.
Originally posted by Patman:quote:It's a myth, you can switch back and forth every second interval and it wouldn't hurt the engine. I wouldn't recommend doing that a lot though, each time you switch brands of oil, the next oil will oxidize just a bit faster because of the different additives mixed in there. Which is why if you do extended intervals, always wait until the 2nd interval with the same oil before doing it.
Originally posted by 94 formula: Hmm well what would be the best oil to use with auto rx or an engine cleaner of that sort? Also is the idea of switching from synthetic to mineral oil then back to synthetic oil being a bad thing just a myth?