Oil Question.. New Mobil 1 green cap 0-W20

[Tampa G35 Sedan 6MT]

I saw this stuff at walmart yesterday!

IT is to increase fuel economy! Like 1 mpg or 6 cents per gallon!

Do you guys have any idea if it will work or if it is worth the 0-w20 light weight?

will this oil increase the HP of a car?

the mobil 1 website doesn't even show it on the site so i don't know where to get the info from!



DJ

[Tampa G35 Sedan 6MT]

wow I thought some of you oil freaks would have know about this stuff!

[Jacko3]

This oil maybe too light or minimally viscous for the VQ engine. The higher the last number the heavier or more viscous the oil. I belive some Hondas use the 5W-20. I think the SAE 30 grade oils is what was adviced for the VQ engine.

[lucidd]

I'm no expert with oil...but Jacko is right about the viscosity... This 0w-20 spec may be too runny - or watery for the G [only because of recommended specs of: 5w-30].

Just fyi, which may shine some light on why this bottle would have the fuel economy green label:is probably because of the 0w<< this means that at cold temperatures [even below freezing point] this oil stays at a viscosity of 0w --- so it is excellent for cold temperature lubrication aspects... because the oil's lubrication at these low operating temperatures - protect as well as when the oil is at normal operating temperatures [after warmup].

So in essence - this oil with the 0w spec - will lubricate better* than a normal 5w oil <<<only at startup, and during warmup. BUT--- the problem is that after warmup, into the higher temperatures - such as a hot Cali day... ... with some flogging --- the engine/coolant/and oil temperature will climb - allowing the oil to become as viscous as water - which may affect its ability to protect your engine in this case.

--- like jacko said, the higher the number, the more heavier and thicker the oil is... which means that even at high operating temperatures, the oil will not become like water --- and continue to have optimal lubricating properties.

... at any rate ---IMO... I'd stick with 5w-30 mobil 1 -full synthetic - or royal purple... or whatever brand full synthetic.

*** claims of 1mpg better fuel eco - is most likely - 1mpg better over normal dino oils. .. I'd highly doubt 1mpg better over mobil 1 full synthetic 5w-30.

...Ps. Anyone try Duralube or Slick 50 or Prolong etc??

[joe603]

The VQ likes thicker oil...especially the REVUP engines!!

DO NOT USE THIS OIL ON THE 05+ G35'S!!!!!

[tollboothwilley]

This type of oil is used in Hybrids

Also, some people will use this type of oil to clean out the engine when they change oil

[Sentientbydesign]

Let's clear up some info here.

The oil does work slightly... I put it in my wife's celica. She consistently got 31.8 MPG with mostly highway driving. Last couple of tanks were 32.8. Not hugely significant, but still a difference.

I think the one I bought for her car was a 0w-30 though. I sure hope I didn't put 20 weight oil in her car lol.

Now for some information:

The 0w indicates the pour point of the oil. The lower the number indicates that it is suitable for cold weather situations. A higher number indicates that it has a warmer pour point.

The other number indicates it's weight/viscosity.

It's easy to find a synthetic oil with a low pour point that won't shear and won't drop (significantly) at high temperatures.

It is my belief (with some research and science behind it) that the real problem exists with low pour point conventional oils. WHY?

Because there is a lot that needs to be done to a conventional oil for it to pour at a low temperature. It seems that the longevity of the conventional oil is affected when the pour point is lowered. It's analogous to a cheap guitar string. It's already stretched tight. Then you stretch it some more (the low pour point), then you want it to last a long time, especially at high strum rates (heat and high RPM). Somethings got to give.

The wax in conventional oils is one of the characteristics that prevents it from having a "naturally" low pour point.

Noah, Joe, possibly Rich, and I will be working on putting together a basic oil guide for you guys soon.

[morrison82]

0w is a fully synthetic oil. Great for the engine prob will slightly help with mileage. But do not run the 20 weight in your car for to long, it does not have enough consistency to protect the engine for long periods. Most use 20 weight to clean the engine before adding 30 weight. If you run a fully synthetic oil be sure to get 0-w30 nothing lower.

[joa]

I'm running 0w-30 amsoil at this time, but agree with those that state, the last number in the oil definition should not be lower than what the car manufacturer recommends. My engine says 5w-30 is recommended, so for a rule of thumb I would not use anything less than the 30 weight. As stated the first number is cold or warm up consistency and the last number is the thickness when you are running a warm motor. Having said all that, yes, not all 30 weight oils have the same consistency either. but in general you are better off running what the car manuf. says to run in weight and thickness. IMO

[joe603]

I use Royal Purple 10W-40...