5w50 oil

[noraa]

any tried these engine oils?

[funnyface]

A quick glance via google suggests its a full blown race oil wanting to run flat out and or at heavy load to work at its optimum. Sounds like it may kill a normal engines with the typical short average UK trips from work to home probably averaging ten miles or so. Also sounds suited to warmer climate per se. The additives sound like poison to the catalytic-converter which race cars do not have plus trouble to the head and cams too/possible?

If we deal with what we do know rather than what we do not know - Smart cars demand their exact specification oil and experimental deviations using other grades has resulted in premature engine failures.

We would have used this with piece of mind in our previous race car replacing the 15W- 50. Evidently this is cutting edge state of the art current formulation with high measures of anti-wear/heat/friction technology. For a race car YES. For a Smart car NO. I might/could be totally wrong though. Who can answer this is an oil technical specialist - as oil is a highly technical discipline. Especially to us laymen. Be good to hear/learn more regarding 5W-50 OIL.

Cheers,
Kelly





http://www.xado.co.uk/xado_uk_atomic..._5w50_slcf.htm

XADO Atomic Synthetic Engine Oil 5W-50 SL/CF is new multigrade fully synthetic motor oil for heavy operation regimes. This motor oil is formulated on the base of complex synthetic base oils. These oils contain polyalphaolefines (PAO), which are very stable to extreme loads.

http://www.mobil.com/Australia-Engli...bil1_5W-50.asp

Product Description

Mobil 1 5W-50 is the most advanced performance synthetic engine oil designed to provide ultimate wear protection for a smooth driving experience every time. Mobil 1 5W-50, Rally Formula, exceeds the requirements of the industry and car manufacturers' standards required for high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines. Mobil 1 5W-50 is especially suited for high speed and severe service associated with stop and go driving. Racing or normal driving, Mobil 1 5W-50, Rally Formula, provides heavy-duty engine performance and protection for an outstanding driving experience.

Features and Benefits

Mobil 1 5W-50 is made with a patented proprietary blend of ultra high performance synthetic basestocks fortified with Supersyn Antiwear Technology, the most advanced additive system available today. Mobil 1 5W-50’s wide viscosity grade together with patented Supersyn Antiwear technology provides a flexible combination of powerful protection agents to outperform in many driving situations. This oil, not only exceeds the toughest industry performance standards, it is approved by several major car manufacturers for service fill use. Cars using Mobil 1 5W-50 will perform flawlessly, no matter what the driving conditions, situation or age. Key features and benefits include:

http://answers.yahoo.com/question/in...4153519AAuDbip

Newer cars these days are recommending to use a 5W as the first number, because a thinner oil is more economical, as long as it lubricates well enough and doesn't cause start up damage. There is even a 0W now.
Most company's are recommending a lower weight oil these days. I run 5w-50 in my drag car and hasnt caused me any problems.


Best Answer - Chosen by Asker
In the old days, at least with dino oil, it was recommended not to go over 30 difference between the two weights. So 10W40 or 20W50, etc. However, my M3 uses 10W60 from the factory. I can only get it at the dealer! It is a full synthetic, so I think that helps. Many polymers are needed in order for an oil to be both weights, and the more polymers, the more that they can break down. I don't really remember exactly what happens to them. Anyway, a 5W is pretty thin, are you in an area that is very cold? And why do you need something that goes up to a 50W? I have no idea why the M3 needs a 60W, but that's what it takes. The range is "supposed" to be a range of the temperatures you will be starting your car in. Newer cars these days are recommending to use a 5W as the first number, because a thinner oil is more economical, as long as it lubricates well enough and doesn't cause start up damage. There is even a 0W now.
1 year ago

http://priuschat.com/forums/care-mai...hetic-oil.html

I now run Mobil 1 0W-20 year round in my Prius, with excellent used oil analsis after 12,000-16,000 km of use per oil change. If you have some 5W-50 left over, go ahead and use it up. But don't go out of your way to run it in the Prius. Most 15W-50 and 5W-50 synthetic oils have extra ZDDP additive to protect classic cars and trucks, which use solid lifters or flat tappets

Any motor with flat tappets, especially solid lifters with high spring tensions, will benefit from extra ZDDP. The additive will protect the camshaft. No need whatsoever for ZDDP in a Prius motor

The Prius in the EU allows a wide range of viscosity, including 20W-50 depending on ambient temp. Also a suggestion that 5W-30 is best, especially for cold starting. A synthetic 5W-50 will offer better cold start performance than a conventional 5W-30.

If ZDDP poisons catalytic converters (as I have read) than I would b enegative about oil containing it in Prius, not just neutral.

At least (as Jayman points out) higher viscosity oil will reduce fuel economy. At worst, it could delay engine starting enough to throw the code you don't want to see. Also there is at least the possibility of insufficient lubrication, because this engine is pretty tightly spec-ed. Much more comfortable considering lower viscosity engine oils in Prius.

http://answers.yahoo.com/question/in...6223759AAgrYSy

...the first number in oil viscosity is the thinnest it will get when hot, the second is how thick it will get when cold. your environment counts for what weight to use- if you live in florida use 10-w30, if you live in maine use 5w-30, if you have high mileage use a higher viscosity like 10w40 or 20w50 or a high mileage oil in a similar weight.

without technical details the 50 is thicker than than the 40...
the 40 then takes less to get going at low temperatures,,,,the 50 is thicker and works better with high speed driving but takes longer to warm up
4 months ago

[noraa]

just for info i tried this oil on a non-smart in a tropical country , average 31 degrees.
fuel consume is lower if you have a lighter foot and if you have a heavier food you will feel the increase in smoothness and power and the fuel comsime increase.