DR. FEINSTONE

I recently got a 5 bottles of voll-synthese 5w40 german engineer motor oil from my girlfriend for the holiday. I currently have this voll-synthese 5w40 motor oil in my car for over 3000 miles from Olympus Imported Auto Parts earlier this year. So far it is good compare to other 5w40 motor oils. It helps out quite a bit in the hot summer & cold winter here in Northern Virginia. And probably help alot of guys/gals out in the Northern States. Has anyone else use this voll-synthese 5w40 motor oil?

INDYMAC

This looks like a classic European formula 5W-40. It's probably a group IV/V synthetic base oil with plenty of ZDDP. I wonder how old it is though. The euro ratings look pretty current, but the SAE SJ/SH is pretty old. Maybe they didn't want to or need to lower the ZDDP levels for an SL/SM rating in Europe?

The date code looks like it was blended in July, 2005.

I'm sure Spitfire is familiar with this oil and will offer his opinion.

2007 Zx-10

price?

iDomN8U

w40 a little to thick? any Cst #'s?

SpitfireS

INDYMAC Posted on Dec 29 2008, 01:51 PM
Sorry, I've never seen this oil in the Netherlands.

Regardless of brand I'm not a fan of xxW-40 weights in S2000's anymore.
I've used Shell 0W-40, without any problems and the UOA was allright but I think the F20's and F22's run best on xxW-30 weights.
In any climate.
It depends on the low temps in the morning what "xx" I would take.
Really cold = 0W
Kinda cold = 5W
Not cold = .. also 5W
Death Vally cold = yeah ok.. a 10W

That said: you can't go too thin when the oil is cold.

2007 Zx-10

is the apparent viscosity of a 5w-30 really that much better than a 10w-30 for the few minutes prior to warm up with ambient temps of say, 30 F? I don't think the pour point is much different, and I find it hard to believe the wear is going to be different...unless you're making alot of short trips, I don't think it's worth it, and the viscosity at operating temps is less, which means less high rpm protection

I'll stick with 10w-30

SpitfireS

2007 Zx-10 Posted on Dec 29 2008, 08:32 PM

30F = 0C
See for yourself.
The difference at 0C can be as much as 63%

During those few minutes prior to warm up most wear occurs.
Not IMO, its a proven fact.

2007 Zx-10

not much of a difference here between the full synthetic 5w-30 and 10w-30 grades at 0 C, again, I don't see this as a significant added wear issue, perhaps if you are in an extreme climate where it's closer to 0 F

btw, those are calculated, not measured, values

2007 Zx-10

another issue I'd like to see evaluated: how tolerances inside the engine change at lower temperatures

DR. FEINSTONE

SpitfireS for the oil viscosity chart comparision. 5w40 is a year round to adapt in various weather condition. I usually keep motor oil in my car for 5000 miles due to drop-in k&n filter, j's racing snorkel, pulstar plug and okada projects plasma coil. Also my spirited driving on the weekend to mountain roads & private roads.