Dell, it'd be better if we could get OW-50; that way we would never have to discuss this ever again.

 

Want some HP with that Dell?

 

Here we go again....

 

Sorry, I'm a Mac guy. Ironic isn't it?

Amen to that brother.

 

I've finally snapped!

1999, when you step up to the plate, and bear all fiscal responsibility for any engine related problems I might have as a result of following your advice that is contrary to the manufacture's, I'll use your recommendation. Until then, I wish you would just stop. I work all day handling service problems for a VERY large manufacturer of big yellow engines. We see your type all the time that think they have more knowledge than we have gained through development and testing of thousands of engines.

End of rant. You are now returned to your regulalry scheduled programming.

 

What are we trying to get out of these discussions? Better performance, longer engine life or what? Had your Indy bad luck with 0W40 discoganya?

 

I am trying to elicit real experiences (and opinions) from people who have switched their oil. I specifically asked three questions in my first post.

I don't want either. But I do want to avoid worse performance and shorter engine life

No, my Indy has no evidence to support that.

 

So, you work for CAT? You probably work for a buddy of mine, who is in charge of the engine division. Recently moved over from Marine. I personally know half of your BOD and used to work for your compensation chairmen.

Small world.

 

We don't need no stinkin' 0W40! The waterier (sp?) the better! I'm using 0W30

I'll let you know if my engine blows up

 

I am using 0W-40.....my car seems happy.

JB

 

What common sence tells you about oil has very little to do with fact. Thinner oils dissapate heat better than thicker oil. Oil sheer which in itself creates heat and friction is reduced in thinner oils. With ultra fine high micron machined finishes, close bearing to shaft clearances and ultra thin piston rings, thicker and heavier oils used in the past few years are no longer needed nor perfered. Many Techs, independent or otherwise know very little about lubricants. Most have opinions based on incorrect information they have received over the years.

The above are observations I have made about oils. I have studied them casually for years, talked with petrochemical engineers working for large motor oil manufacturers, I have built several successful roadracing motors and continue to build high performance motors with 5 in the works currently.

I'm not trying to convince anyone to use any particular brand, type or weight of oil, swaying your religious and political persuasion is probably easier.

 

You can get Mobil 1 5w50 here in the states... We had this thread a couple months ago:
https://rennlist.com/forums/showthre...&highlight=slr

I found that some Mercedes dealers in the US may stock and can order Mobil 1 5w50 by the quart; the part number is Q1090134 ($7 per quart, the fill for the SLR).

 

Forgot to mention one thing... You can get close to 5w50 by mixing 0w40 and 15w50 at a one to one ratio.

See https://rennlist.com/forums/showthre...&highlight=slr

In the thread I indicated that I had spoken with some tech guys at Mobil headquarters (800-662-5251), and they indicated that the 0w40 oil can be brought close to 5w50 levels by mixing 0w40 with 15w50 at about a 1 to 1 ratio. They also indicated that 5w40 Delvac won't be different than 0w40 for non-winter driving (driving in LA).

Enough with the fussing and go enjoy a drive!

 

Amen Cy!

 

This is the most ridiculous debate ever. It makes the discussion of fuel quality look like metaphysics. There's no way to tell whether you are right or wrong about oil for, like, years. And only then if you have the equipment and skill to measure engine wear. The fact that your car seems "happy" or that you have had "no problems" is evidence of nothing. On that basis, I'd like to sell you a case of elephant repellent. I can personally vouch for the fact that not one pachyderm has darkened my door since the day I bought it. I also use it in the car now and, again, no elephants.

As with most things on the internet, the passion in the argument is inversely proportional to the evidence available. I'm just going to stick with whatever it says in the manual.

PM me if you want some of that elephant repellent. Willling to consider discounting for a group buy.