I guess the marketing plan is to make people who don't pause to look at Castrol's new product and acknowledge it as a (me too Mobil 1) as dipsticks.

mts:

Autozone is presently running a similar deal on Castrol Syntec:
Buy 5 quarts for $27.95 and get a free Fram oil filter of your choosing. Limit 2 per customer.

Regards, Maurice.

I was thinking about this thread and how it demonstrates our passion for being good stewards of our cars. We shouldn't lose sight of the fact that at the days end we are all people who enjoy driving performance vehicles, four door motorcycles. AND as a comedy bonus, any guy out there reading this who had an engine failure has to be LOLing his ass off at the scrutiny of lubricants.

I was thinking the same thing...debating over oils and such is like debating which is the best beer.

We all have our favorites and the key is to replace it often.

Bought some M1 0W-40 at Wally World today for $6.27 a quart, they also had a lot of other weights in 5 quart jugs for $22.

lawsuit
 

as i recall that was the whole issue of the lawsuit Mobil filed against Castrol say about 10 yrs ago, mobils' argument was that a synthetic oil was made from poly olephins (a natural gas derivative) and not specially treated convention oil...

the judge ruled that castrol was within their right and so synthetic has taken on a whole new meaning....

i have been running delvac1 for yrs in my vw's and expect that it would work just fine in the boxster for its second upcoming oil change...

Delvac 1 is VERY good oil. You could probably run it in the Porsche, though depending upon how much consumption you have, it could potentially be not so good for the cats.

I've run Delvac 1 in many motorcycles with great results.

are not seeing any noticeable oil consumption with this 2006, has less than 20,000km on it

I bought Royal Purple 0/40 today for $6.99/qt. Advanced Auto is having an RP special and the shop that carried the 0/40 matched their price.

According to Mobil, Delvac 1 meets SM standards. That should indicate that it has very little Zinc or Phosphorus, so it shouldn't have a negative effect on catalyst life.

http://www.mobiloil.com/usa-english/motoroil/car_care/askmobil/mobil_1_vs_mobil_delvac_1_for_a_gasoline_engine.as px

Related question: has anyone tried Quaker State Q horsepower 5w40 synthetic? It is supposed to be the same as one of the Shell Helix oils (Shell owns Quaker State) and is Ferrari approved.