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Originally Posted By: randomhero439 Originally Posted By: CATERHAM Originally Posted By: 901Memphis Motorcraft 5w50 synthetic would be a good choice if you're going to be rough. Does the manual allow anything stouter than 5w20? Ford doesn't recommend anything heavier than the spec' 5W-20 even...

Originally Posted By: nomochevys Since this thread is about the 5 liter Ford engine correct me if Im wrong. Does not the GT Mustang with the track pack specify 5w 50w oil? Im pretty sure it does and this is the exact same engine as the regular GT gets. Yes it does and it just proves that Ford...

I mixed 3 quarts of rotella 5w40 with almost a full quart of mobil 1 vtwin 20w50. What will this do to the weight? The bike calls for 10w40 and my thoughts are the 20w50 will help keep it a 40 weight at operating temp. Surely a 5w40 is going to shear quickly, but I haven't looked up any UOA's...

I have not seen it anywhere, but I don't usually look at the castrol offerings. I might try it in my motorcycle.

Ditto on the scum when used with the ford gold coolant, but it will turn back into a liquid when hot. I won't be putting it or the gold coolant back in my car next time.

Has anyone seen a VOA for this oil? I want to know if it truly has more zddp than their standard syntec. I searched, but couldn't find anything about it.

Originally Posted By: heavyhitter Originally Posted By: moosestang Have you run the Valvoline 4 stroke? http://www.valvoline.com/products/consumer-products/motor-oil/motorcycle-atv-oil/13 I'm using it in my buell now. I might do a UOA if I can remember when I changed the oil last, lol! At only...

Have you run the Valvoline 4 stroke? http://www.valvoline.com/products/consumer-products/motor-oil/motorcycle-atv-oil/13 I'm using it in my buell now. I might do a UOA if I can remember when I changed the oil last, lol! At only $4 a quart, it's a good deal compared to the synthetic alternatives.

3200 miles? I run Valvoline 4 stroke in my buell for 2000-2500 miles. Seems like over kill if you are going to change it that often. Any synthetic is going to be comparable at that change interval. I dare say my conventional oil will hold up well to that UOA, but i've never had it tested.

Originally Posted By: tig1 I like Hucks re-re-re- refined 39cents a qt.oil. Originally Posted By: ARCOgraphite "Best" is meaningless. You are correct. There is no best, but several that are equal. Ams, M1 PP etc. Since your engine is nothing special as far as a problem engine all of these will...

There's nothing fancy about a PCV system. It's a valve or valves on the valve cover that connects to the intake manifold via a hose. You car will suck oil through the pcv valve and into your intake manifold. The pcv is just for emissions. I have a filter on mine to catch the oil before it can...

Originally Posted By: EagleFTE Here is my 2 cents for what it is worth. Despite what the book says I would run a dino only to 2k to 2.5k. And if I thought it got stressed dump it and reload. I just read a post where a guy said he pegged his guage at 300 F in traffic in Vegas and envoked the rear...

Originally Posted By: Anies The car does look good I think, to bad I don't buy Ford Cars or little SUV's. Their pickup trucks would be a maybe. To bad you are narrow minded, shame. I check out all the manufacturers when car shopping.

Just thin it out with some water.

I don't know if a 5w20 is going to be ideal for the long term, but that is a big, ugly car. 355hp isn't nearly enough to move that beast. Hopefully they over-engineered the motor and you can just crank up the boost for more power.

Originally Posted By: RTexasF There is no need to "outhink" the auto and oil manufacturers. I don't feel any of the auto manufacturers are thinking about the long term effects of a 5w20 vs 5w30 or even 10w30. Soon all manufacturers will be recommended 5w20 because it's good enough to prevent...

If mobil 1 doesn't meet the API SM tests, then why do all my old bottles say API SM on them? I might do valvoline synpower on my next oil change just to see if it produces a better UOA.

Originally Posted By: demarpaint I think almost all of the Ford line up now calls for 5W20, with possibly a few exceptions. My point was a lot of people feel that the 5W30 is better and go against the mfg suggestions, and could get burnt in cases like this. The GT500's use 5w50 and have vvt...

Originally Posted By: 1sttruck The same vehicles 'that have to have 5w20' for a variety of reason in the US are shipped overseas and Ford recommends something different. You can't rely upon US manuals as by law per CAFE only one oil can be recommended, so look in a non-US for the range of oils...

Why would you put 20w50 in a car that is spec'd for 5w30? My air-cooled vtwin specs 20w50 for christ's sake, that's because it runs freaking hot!