Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Recommend Oil

From what I've read on the oil boards, neither is the new Mobil 1 "SuperSyn" oil. So much for Mobil 1 being a truly synthetic oil. I bought as much of the old tri-synthetic as I could find, since the new stuff is popping up everywhere.

I don't know what I'll use when the stuff I have runs out.

-Lance

Lance - I had heard the same rumors concerning SuperSyn, but they are indeed unfounded. SuperSyn is being described as essentially a "quad synthetic" oil. Still a synthetic base like the previous formula, only with an extra ingredient now. Mobil1 has yet to sell out

The only thing they changed was adding a new anti-wear package. (well and raise their prices across the board!)

I just bought 6 quarts of the mobil 1 super-syn for $21 on sale for fathers day at wal-mart. I don't think it is much more expensive than what I paid for the tri-synthetic at the last oil change.

I need to check out Walmart tmrw...

Everywhere else around here jumped to $5/qt like the second "super-syn" was announced for release!

I haven't bought any since the last Walmart sale ages ago (~$14 5-quart jugs - Bought a case )

Been using 20-50 since the 80's in high performance motors to make them last. 5-30 in the light duty customers cars because they tend to blast away while the engine is still cold.
Recently I began obtaining Mobil 1 0-40 direct from my parts supplier for my cars and hi-po customers cars. This is what MB,BMW, Porche etc are requiring in Europe where they are more concerned with high output motors lasting rather than the CAFE mania here in the US.
If anyone is more concerned about gaining 2.5% MPG at the expense of engine life 5-30 is the way to go, otherwise get an oil that does not thin to 7 cp at 230 deg F as 30 wt does.
For anyone that is interested, I have temp vs viscosity curves for Mobil 1 and Mobil drive clean multi vis oils in pdf format. Looking at the curves between 60 deg F and 230 deg F show about a ten to one viscosity change over this temp range. Temp change has a greater effect on viscosity than choosing a different SAE grade.
For those that are worried that a 40 wt oil is to thick for our modern Contours- the curves indicate that putting in a lower temp thermostat or an oil cooler to get a 25 deg drop in running oil temp is like going up a grade in viscosity!
Conversly, beating on the car in summer and pushing the oil temp up effectivly changes your oil viscosity from 30 to what a 20 wt oil would be at the nominal 100 deg C.
I am not surprised to hear about the occassional spun bearing on these boards when the prevailing wisdom is to follow the CAFE driven recommendation for 5-30.
My choice for obtaining the 150k + trouble free miles in my "actively" driven vehicles is either the 0-40 syn or 10-40 dino fluid.

just change your freaking oil when needed :rolleyes:

There's an oxymoron.

Lemme see your mullet too as you must be talking about old design pushrod V8's

You obviously are not talking about todays tight clearanced engines. (last decade or 2)

I prefer to protect my car at startup during it's time of greatest wear. Also I don't like falsely raising my oil pressure while sacrificing oil flow (volume) at operating temperatures.

On that note: I do think a 0W40 oil would be a good choice in weight.
However when I asked Mobil about it having viscosity index improvers than didn't say it didn't like they love to claim about their 5W30 oil. Viscosity index improvers are a bad commodity at any temperature, especially in a high strung, high performance engine.

And for the record - a lower temp thermostat will not drop engine temperature in the summer. Engine temp is regulated by the computer via the fans. The thermostat is just used to reach operating temperature faster and remain there in cooler weather, but I get the idea