Who would have guessed 1928, or 1950's ??

To the average consumer, dino oils are perceived for all intent and purpose as old tech, and with synthetics perceived as new or newer technology.

I am aware only that Moble 1 was the first synthetic oil available back in the early 80's, but lately have read claims from Amsoil as having been first with synthetics back in the early 70's available to the consumer.

I like most are at the mercy of the market guru's and want to believe....

There is another way to look at drain intervals...most people posting here are talking about using synthetics to extend time between intervals. However, if for example one changed oil every 3K with dino vs. oil change every 3k with synthetic, would the result under this study be that the synthetic user had a longer lived engine?

This is a no brainer but extending drain intervals as talked so much about is for convenience, more time to play golf, even if they don't change it them selves! I look at it as exteneded service life! And what the hell do they care, their going to be in a new car every couple years anyway! Why should most people care about what ever happens to their former ride after they get rid of it?

I'm almost always the end user of most any meterial product, be it a car, computer, or even the cloths I wear, are all second or third hand. So I personally look at extended service life, vs. convenience! Without it, I'd never have a Benz!

What is your thought? BB

Well-enginered semi-synthetics are great for those that want the high-temperature stability and wide viscosity range of a 100% synthetic, but not the high-cost when doing a short drain interval (< 7,000-miles).

I use Schaffer's 7000 15w-50 semi-synthetic since it has a high TBN and excellent shear qualities due to the moly additives. It also meets Daimler-Chrysler's MB 228.3 and 228.5 specs which is fine for my C36 AMG engine.

Check it out here:

http://www.schaefferoil.com/datapdf/700.pdf

More info can be found on oils here, including the Schaeffer brand:

http://theoildrop.server101.com/cgi/ultimatebb.cgi

:-) neil

Very impressive.

What is your oil change interval?
How do you drive the car?
Do you change by calander time or by mileage?

My 93 Ford Taurus 3.0 just turned 200,000 miles. Unfortunatly my odometer is not quite as impressive it reads something like 00,067. My goal is to get to 300,000 but the car is really getting too boaring for that?

I use Mobil 1
I change oil in April and October which puts me at about an 8000 mile interval.
I drive 80 % highway.
Engine (and rest of car) still runs like new.

John Roncallo

I have about 186K miles on my W124 wagon. I upgraded to a AMG C36 powertrain (engine & tranny) at about 109K miles, and the powertrain had 18K miles on it.

My interval which includes filters, is EVERY 3-months or 3K miles whichever comes first.

However, I use my car under SEVERE conditions, including a commute that's under 5-miles with wide-open throttle runs twice a day, and SCCA autocross once a month.

:-) neil