or if you pay more to get the same then well i guess you get the idea.

personally i can afford a lot but i can afford a lot because i don't waste my money on questionable/marginal differences.

 

I have an engineer working at my shop that did testing for FORD on longterm wear for Mobil1, Penzoil, and some other brands. Very intersting results from oil analysists to engine breakdowns from hundreds of hours on engine dynos...

We don't use anything but Mobil1 in any performance application, especially turbocharged ones. I've been inside enough turbos to see the difference.

To each their own however.

 

Mobil 1 is what I use in my turbo Audi.

glad to hear it's as good as they claim.

 

i use it in my motorcycle but that is due to the wet clutch and gearbox.

95% of rotary engines do not ever die due to lubrication caused failures(i would guess 4% of the lubrication failures are due to oil level run dry due to a failure in the delivery system), hell most of the time the bearings are in great condition and many rebuilders reuse the original bearings to run the engine for another 100k+.

i'll stick to my own thoughts on the subject and i doubt either of you will be able to sway that. last i knew my car was not driven in a lab also.

 

I hope you don't think I was attacking you, I briefly read what everyone said and just thought I would share what I thought...

 

I dunno about you guys, but I run melted butter. It makes my exhaust smell like popcorn

I say run the least expensive oil you can and you more frequent changes, its still cheaper than nearly $20/litre for some synthetics.

But some people prefer the peace of mind. Although I have no doubt that a synthetic won't break down as easily as straight conventional, but I changeit too frequently to care anyways

 

thats the thing, most engine oils still have plenty of life left even after 3k miles, the problem is the oil is filled with carbon and deposits which is why it gets changed regularly. if you could run a synthetic for 10k miles then i would say the offset may be worth it but after 10k miles the oil would be filthy and so would the internals of your engine.

 

Well I like the added peace of mind, I don’t see it as being a waste of money, plus I can guarantee that synthetic oil will perform better in turbo applications. Ok, maybe I can’t guarantee but from what I’ve read it should.

 

How often do you change your oil? Because to me peace of mind is knowing my oil isn't black.

Until someone shows me real proof (rotary application proof) that one is xxx amount better than the other, Im clinging to my money with a death grip...gas is ****-spensive...

But hey dude, whatever floats your boat

 

Well in the 7 every 3k or sooner but in the Audi every 5k. The factory service interval for the Audi is 10k. The dealer changes it for free every 10k, I just change it myself in between at 5k intervals.

On a side note my wife’s Honda Pilot uses 5w20 oil…..that’s like water.

I don't have a boat?......haha!

 

For what its worth, the previous owner told me he ran royal purple for an oil change, and it ran noticably smoother.
As for increasing the oil change interval, don't you still change the oil filter every 3k?

 

not on my Audi oil/filter 10k....to me thats just to long. Maybe if you drive like a grandma it would be ok.

edit: Some European cars even have 15k service intervals?

 

HELL yes. Never change the oil without changing the filter unless for some reason you have the wrong filter and need to get by for a day or something.

Thats like taking off ****-stained underwear, taking a shower, and putting those dirty buggers back on!!!

 

I 100% agree with this guy.

 

Are royal purple products that hard to find? Where i shop they keep the entire line fully stocked at all times. I also asked them to bring in some lucas oil products and some MMO. And sure enought the next week it was all there, just from me "the rotary guy".

And I don't use synthetics in my motor. But I've been know to use some lucas oil stabilizer from time to time.

 

Royal purples headquarters isn't to far from my house.....so it easy to find here.

 

No, I meant that if you're keeping the oil for 10k, you still change the oil filter every 3k. I would never dream of keeping an old oil filter on.
As for royal purple. you can find it in lots of places around here, be we are the ricer ******* capital of the south. I mentioned it to my local o-rielly's and they carry it now, but you can get it cheaper online. I think the NAPA here carries it too, as well as several of the ricer shops. I think there's even an oil change place that carries it.
I actually found a place online a few years ago where I could get it for 5.50 a quart, but I'm pretty sure RP has raised its prices since then. Cheapest I saw when I looked earlier today was 6.70.

 

Since everyone has so much to spend on their oil, here ya go. Only 85 bucks per oil change. Sweet!!!

 

you think 5-20 is like water? The honda hybrids use 0-20. THAT is water.

 

At operating temperature there is absolutely no difference between 0W20 and 5W20. It's only when it is really cold that 0W20 is slightly thinner than 5W20.

 

My wifes car uses 5-20. I hate it because I can't see it on the dipstick to see how much I need to add.
And wow, I never would have suspected that RE Amaskdlhag (sp) would have his own damn oil. That just blows my mind. Its probably rebadged idematsu rotary oil, or whatever.

 

Let's just say I am going to disagree with every single aspect of that. Now you know why I encourage everyone to learn to fix their own cars.

 

Actaully, its a noticable difference at room temperature. And i know that at operating temp its no different.

I wonder when the #-10 oils are going to start coming out. Motors these days are getting tighter and tighter.

 

yeah royal purple runs great when u sit at idle you cant even feel the engine vibrate. reall good stuff it also dosent trans as much heat. this stuff kicks *** o and i dont know where the guy who was asking where he get it but im in south florida and they sell it at advanced auto parts store u can buy it one line

 

You really need to stop smoking that good ****...

Oil has nothing to do with how the engine does or does not vibrate.
If your engine is vibrating, you either have nasty imbalance problems or your mounts are loose or broken.

"Trans as much heat"?
What does that mean?
The engine runs cooler?
How much?
What gauges tell you so?
What is the difference?
Under what conditions?

Yeah, I thought so...


-Ted