Is AMSOIL fine for a TDI JETTA
Amsoil does work!
I've used it for almost 20 years in everything I own (cars, boats, dirtbikes, motorcycles, trucks, campers) for the engines, transmissions, differentials, etc.. I've actually torn down engines that used different oils and the Amsoil ones are always better. That's what convinced me to switch and so far the company's claims are true (better mileage, run cooler, etc). If the previous 2 posters have actual experiences with the product to back up their "scam" claim, I'd love to hear them.
They have made it very hard to find good oil information on the Internet that doesn't contain their marketing material.
That alone is a reason not to like them. Not saying it means they are doing shady stufff but it sure doesn't look good.
I know there is not much advertising from them, but i didnt find much wrong reported out on the internet either...oh you said they are hiding that info...i see.
However, Amsoil shills such as yourself come to forums like this one or motorcycle forums (which I'm also heavily involved in) and tout the "evidence" of how much better this oil is. Meanwhile no manufacturer recommends it, it's expensive, and only available largely through their Amway like dealer network.
I'm sure you'll have a response to this but don't bother; you won't convince me to buy that product either way.
I've heard of motorcycle companies recommending a certain brand of oil, and then you come to find out that there's a marketing agreement between the two companies.
Here's some API information:
API Certification System
API Quality Marks
API Licensing fees
Amsoil and Royal Purple may be decent products, but they don't submit to automakers (at least European ones) because that isn't their market. They don't expect their products to go in premium imported cars; the market is also too small. They are after the average Joe using dino oil in their driver, truckers, and the American hot-rod and old muscle car markets. Amsoil has API certifications, which is all they need. Also, their markets involve engines that will be routinely rebuilt (especially amateur auto and bike racers) or are heavy-duty to begin with, and made for rebuilds (diesel truck-tractors). Royal purple is sold at Wal-Mart, right where their target audience often shops.
I never understood why if Amsoil was so damn good, why it's only sold through multi-level marketing. Something kind of cheesy about that.
One of the AMG factory guys there said that nobody would say specifically that such a failure was due to the oil, but he did say that MB, BMW, VW, etc will test some products on their own sometimes out of curiosity, and that Amsoil's formulations were never conforming enough to MB standards to be given an approval. So no warranty coverage. He said that they like to have as many approved products as possible because if there is a warranty issue that comes up, it's tough either way- a customer gets hung out in the breeze, or the manufacturer has to eat a huge repair, and nobody is happy.
The tech guy said that he might put Amsoil in a DTM car that has a full engine rebuild every thousand miles, but not in an MB sedan he'd hoped to go 300k miles in. His impression was that the formulation of Amsoil and Royal Purple was aimed at power and efficiency at the expense of longevity, at least in terms of longevity MB is noted for.
VW/Audi Approved Oils
MB Approved Oils
Amsoil does submit some of their products to API & ILSAC for licensing and certification.
How did MB determine the oil was Amsoil by getting an oil analysis done? Oil analysis will tell properties of the oil, but not necessarily the basestock and all the components of the additive package, they can't tell who made the oil. Plus different testing sites tend to produce different results, due to variances of testing.
Amsoil does have their warranty, but one has to submit all the paperwork documenting it.. and Amsoil does come through if their product (oil or their filters) did actually cause the damage.
Modding... it's a disease that can only be cured by buying a Toyota