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After driving my new Continental CrossContact LX20s for 3-4 days, I can say that the Coopers are a MUCH harder riding tire- new or old, they picked up every little bump in a way that the Continentals don't.

What I read is that the top of Abe's head is about 2/32 or 1/16", which is the legal limit for treadwear. However, they recommend 1/8" of tread (4/32" or 2/16") for safe stopping ability, and 6/32" for snow traction. 4/32" is to the top of George's head on a quarter, conveniently enough.

I've had a set of those on my Dakota for 5 years now. They're quiet and grip well. About the only complaint I've had is that they wore faster than I expected- at 32000 miles, I'm to the point where I can see the top of George's head on all 4 tires, which seems a lot faster than I'd have expected...

Originally Posted By: chubbs1 True...lets face it...either the higher tier "syns" are not worth as much as they cost for most vehicles OR dexos1 is not that stringent of a spec and more of a money making ploy by GM. I am sure the truth lies somewhere in the middle. I'm not sure how GM would...

Originally Posted By: Jim Allen Originally Posted By: Quattro Pete Originally Posted By: mark pruett Also, I wouldn't worry too hard about the time to get to 10,000 either. There are quite a few long-time high mileage UOAs posted that are just fine, which implies that time-in-engine isn't a...

Originally Posted By: Quattro Pete This one? http://www.widman.biz/English/Calculators/Graph.html That's the one! Maybe if he fools around with that for a little bit, he'll see what we're talking about.

Originally Posted By: Ken2 Do not assume that the API emblem on the bottle means that the oils meets spec. Yes, usually, but it really means that the oil maker is using ingredients from an approved list and claims to be mixing them to the approved recipe. A few years ago Wally had to recall some...

Originally Posted By: Quattro Pete Originally Posted By: gfh77665 OK then! "At what temp does the oil RESISTS thickening more than a straight-weight oil"? Can anyone tell me? We are telling you, but you're not listening. It happens at ALL temperatures. Take two oils, say SAE30 and 5w-30 with...

Originally Posted By: discobiscuit Another question raised is....if the Super Tech oil (Conventional & Synthetic) is the same as Castrol/Mobil 1/Valvoline...how is Walmart able to sell the oil so much cheaper? That one's easy; you're assuming that Castrol/Mobil 1/Valvoline is selling their oil...

I'm guessing that Audi calls for VW 502.01, which is specifically a long-life standard that generally calls for synthetic 5w-40 oils, the 10,000 mile OCI should be fine. Also, I wouldn't worry too hard about the time to get to 10,000 either. There are quite a few long-time high mileage UOAs...

I just got done with a 2.5 year / 10540 mile OCI using 5w-30 Mobil 1 EP and a Motorcraft FL-400S in a 3.7L Dodge Dakota (2005) with the same 42RLE automatic transmission as your Liberty. Fine UOA- no issues over the course of the OCI either. UOA LINK I've generally run 6k intervals over the...

Chrysler says: (according to my 2005 Dakota manual) "Engine Oil: Use SAE 5w-30 API Certified meeting material standard MS-6395" The catch comes in when the certifying body is also the manufacturer- that's what's tripping people up in this thread re: Dexos required or not. Things get a little...

I did- I recently ran some Mobil 1 5w-30 Extended Performance for 10,540 miles and 2.5 years. My UOA came back fine, so you're probably just fine, I'd think. Link to 2.5 year/10540 mile UOA

For the first 7000 miles or so, it was just the Mobil 1, then the Supertech got added to top it off, and then at about 8500, I added another half-quart of the 30HD to top it off.

Apparently 2.5 years and a Motorcraft FL-400S don't make any significant difference. My UOA came back fine. Link to UOA post

Thought I'd post my latest UOA. FTR, this is over a 2.5 year period- the initial fill was over Thanksgiving Weekend of 2011, and didn't get changed until about 2 weeks ago. I used a Motorcraft FL-400S filter, and added a half-quart of Supertech 10w-30 SM rated synthetic at one point, and...

Originally Posted By: ToothPick So basically any type of oil that the chart lists will do, but each oil type has its operating temperature range? What you do is find your expected high and low temps on that chart and look down vertically and see which viscosities intersect both lines. In my...

Originally Posted By: Hootbro

Originally Posted By: ChrisD46 The only advantage I see is a GDI engine makes more horse power in a smaller volume package . Smaller volume usually equals lighter, which when all things are considered, a smaller, lighter engine for the same economy and power is a big win, especially if coupled...

Still waiting on the UOA results...