Will switching from Synthetic to Dyno oil harm my engine?

I buy mine off the shelf when I use it. Probably won't anymore, now that I've found an off-the-shelf source for Mobil 1 in 0W-20, 0W-30 and 0W-40!

Let's call a spade a spade. Bollocks. There are now hundreds of thousands of cars that have run these intervals for many years with no ill effect. The car in the link above is either fictional or posted by a liar. The service monitoring devices fitted to these cars even monitor oil condition and will shorten intervals if warranted. I have never seen any adverse effect when using the recommended oil. If a defect occurs in the system anywhere then it defaults to a safe mode where an early service is flagged.

Anyone is free to change their oil at any interval they choose but misinformation using misleading s*it of such extreme sludge that could not occur in these engines at recommended intervals is just plain crazy. That engine is full of s*it which just does not happen if BMW recommendations are followed. In fact I would expect minimal deposition at any mileage if normal services and oils are used as specified by BMW who, after all, are fairly conservative compared to others. GM cars built in Europe have long had

A friend changed an Audi with nearly 200,000 miles on the clock which had services which were never closer than 20,000 miles and it ran like new. Don't try these kind of intervals with your American engines which have 5000 mile recommended intervals while using minimal SL oil though, or you will indeed find a bit of sludge.

Huw

Exactly what I've seen.

What it's supposed to do, is it has 'conditioners' in it to keep the seals, etc from getting brittle and rotting away. Does it work? They say it does!

SNIP

I know some people don't like the fact that AMSOIL sell through a Network Marketing system. Whatever.

JP

SNIP

If it were pyramid, it would be illegal. Pyramid should not be confused with network marketing, which is perfectly legal..

All oils that meet or exceed any API specification in nearly twenty years have had to meet specific seal standards. This was because a particular early API standard could be met by oils that did not agree with a new [at that time] seal material, causing it to harden and leak prematurely. I think the material was a neoprene blend. This has not been a problem for a *very* long time.

Having said that, the Maxlife and similar added value [read as added profit] oils do have an increased level of a chemical that mildly softens and swells seals. This is not needed of course but some people will insist on treating their cars as if they were sentient organic organisms which will somehow 'thank' them at some point for unnecessary [and unasked for LOL] pampering at added expense. In truth, it is the pamperer himself that derives pleasure from such practice but he would do better and achieve more good if he spent his time and money on doing good to his fellow man.

Huw

Riiiiiight, *nudge nudge* it's not pyramidal *wink wink* it's "multi-level marketing".

You draw a conclusion from an unrelated recommendation. What is on the shelves of your neighborhood auto store or truck stop IS of primary importance. That's what people are buying. Yes, I know VW suggests synthetic IF ... are you are going to perform oil services by the oil life monitoring system. So does BMW and Mercedes for that matter. But for all -practical- purposes, the only mainstream synthetic diesel oil around here (the western US) is Shell Rotella T 5w-40 synthetic.

But none of them are in the USA.

snip

You're in the first stage of denial, Huw. Now ask yourself WHY would anyone go to all the effort in PhotoShop to doctor up a couple of photos like these? Do I smell a conspiracy theory from you?

snip

Huw... our context is the AMERICAN market. Not the UK ... where you are. But go ahead and make your case for the benefit of others. But do review this thread retroactively before you do.

Rob. I'm a retired line haul driver, 1998. I know what's on the shelves around the 11 western states and on tap in the service bays at truck stops. It's Shell Rotella, Delo 400, and Mobil Delvac. RARELY did I see Delvac

Oh ... that is great psychoanalysis! ROFLOL

I'd rather swell my seals! ;>

Sorry but I've also bought Valvoline at the .49 cent price - with rebate of course. Not recently, but at least once this year.

I see Castrol also discounted quite regularly.

My point is obvious to anyone - if you are a halfway smart shopper you can buy oil at the buck a quart level. Sure, you have to buy it when they sell it at that level, and you have to stockpile it as well, but it can be bought.

What you CAN'T do is be a lazy-ass and just walk into whatever retailer you want whenever you want and buy whatever brand of oil you want at a buck a quart. You do have to actually pay attention to these things called, you know, advertising circulars? They come in the local newspaper? You know, the thing you line your birdcage with since you can't read?

I would suggest that you ask your wife where she gets those little things called grocery store coupons, she might teach you a thing or two.

Motor oil to auto parts stores is like milk is to grocery stores. There's a huge market for it and it is very competitive. It is one of the few things that is guarenteed to get customers into the store. When an auto parts chain drops $200K into an advertising campaign, they use motor oil as a loss leader just like the grocery stores use milk as a loss leader. And it works great for that.

Ted

Completely immaterial Dan since every major oil brand discounts from time to time. The Valvoline bigots can buy their Valvoline at discount if they bother to read the advertising circulars. It doesen't take a lot of effort to buy as much oil as you need when it goes on sale, you just need to have the space to store it.

Claming as these morons seem to be doing that their 'spechul' oil is so all-faluting better that it never goes on sale, is a bunch of bullcrap.

Ted

Sure Danny Boy. I ain't trying to sell it here, I was just making a point that *some* synthetics do have significantly more detergency than dino oils. Yes, I am a 20 year Amsoil dealer, but I don't push it on anyone. I use it because it works and they have a much larger selection of products than any competitor.

They INSIST on specific oil for both petrol and diesel engines. The same oils are suitable for both.

But for

That is only because you have virtually no modern diesel cars which call for superior oil. No demand = no stocking. Having said that, you really should be able to find these oils if you look hard. Surely you have plenty of both Mercedes and BMW petrol vehicles which insist on Longlife 01 or mb229.1?

Huw

Of course they are. US BMW and Mercedes have the same service schedule as European ones and have been since 1998 that I know of. Plenty of time for one to run up to 15000 miles many times over.

No, but a lack of imagination from you. Why do you say that I think the pictures are doctored? I do not believe they are, any more than those sludged Toyota's you have pictures of are doctored. Similarly I don't believe that BMW had its services carried out to BMW recommendation using the correct oil. No difference in principal between the idiots who miss services with Toyota or with BMW. Or are you applying a double standard here, that idiots only drive and lie about Toyota vehicles? LOL

Huw