I agree (mostly)...

One thing that frequent oil changes will not tell you is what is really going on in your engine whereas the testing will.

One thing that I always say that if you are in the habit of trading in your vehicle every 4 years or less and so are pretty much running it under warranty - why bother spending money on a superior product such as (fill in your favorite brand here). You might be doing the next guy a huge favor, but think he's going to compensate you for it?

I buy used & tend to keep my vehicles a long time. I also don't particularly get a huge thrill from crawling under the truck to change my oil - but there's no way I want a high-school dropout at rip-off lube change touching my vehicle - so I put in an oil that lasts. UOA are cheaper and easier than changing my oil.

your mileage may vary.

 

wowww, i hope you wont need warranty work done on your MDS any time soon, because if they send out a sample of your oil, and they find that you`ve been running the wrong weight oil in it, (and trust me, they will check it) you`ll be on your own to pay the fat bill in the end

 

HammerZ71, very well said...!!!!
I`ve done some testing over the years, your statement IS spot on bro...!

 

Been using Amsoil products in everything I own including their hydraulic oil in my New Holland tractor for 15 years or so.Have run thei extended drain in a few cars for 250k with no engine issues and changing oil about every 20k.I hate shopping in stores.Become a preferred Amsoil customer and order on line.Big Brown delivers to your door.I use the XL5w20 in my Hemi.Hemis are easy on oil.Some engines are not.Its a better oil then Mobil 1.That bit about Amsoil getting thicker over time is bunk.It shears down and gets fuel diluted like any other oil. Read about their oils.They are really about long extended drains.Thats where Amsoil excels over other SO CALLED over the counter synthetics.The XL series is not considered a extended drain per se.Neither is Mobil 1 or Penzoil Platinum. Here is a OIL site thats free and will give you answers on oil and other fliuds.www.bobistheoilguy.com lots of boring,interesting reading.Here is the Amsoil site.www.amsoil.com

 

Not knockin this, and its just my opinion, BUT.....,
I checked out the "bobistheoilguy" forums, all i saw was alot of questions, but didnt see many answers to the questions that people were writing/asking in there from the oil guru`s. So in saying that, i would take it with a grain of salt. Most any oil today is far better than 20yrs ago, and i`m not to worried about it because i change my oil and filter probably more often than most people do. Cleaner oil will always prevail. The best way to really know what your oil is doing, is to send a test sample to blackstone labs, that will be the best way to know, then decide for yourself what you think you should run for oil, and how often you think you should be changing it. Not everybody`s scenerio is the same, nore will be their oil changes and what oils they run. If it is, then tell me which auto is going to hold up better, a guy runnin his vehicle very hard and changing his/her oil more often, or a guy driving normal and changing his/her oil less often. So here we are, is the glass half empty, or half full. If we stick to the manufacture`s recommendations, and use a good name brand oil and filter, ther certainly is nothing to worry about. Manufacturer`s build alot more engines and testing than anyone on the planet, i think they know what the best grade oil we should be running. Think about it, why would they mis-lead you, if they did, then they would have to pay out big for warranty claims.

 

There are lots of answers on that site if you ask the question or use their SEARCH engine.Their SEARCH function dosen't always work well but none the less if you ASK you will get a answer or put to the correct area to go to.That site has been around a LONG time.I've been using it and reading it on and off for years.Lots of good info backed up by fact and science.Its no charge to join and you can get info/facts on additives,oil and fuel plus other lubes etc.

 

I'm not knocking Amsoil, as I think it is a good product ----- but, it really does thicken with use/age. The only oil known to do that. Others get thinner, as the molecules get crushed, diluted.

I've done my due dilligence in this matter, and it's a fact!

 

So have I and it shears and gets fuel diluted like any other oil.I've seen many a Blackstone oil analysis with Amsoils and it certainly dosen't thicken.The Amsoil high mileage oils have better quality additive packages for high drain intervals.Other wise they don't flow or lube any different then other synthetics.Most Amsoil oils excels in long change intervals and thats what they are design to do.In fact they are considered top tier when used as designed.The money saved using them is only realized when used as recomended.Long high mileage drain intervals.

 

I beg to differ. Again, I've used Amsoil, primarily in outboard engines. The stuff protects as well, if not better than most 100% synthetic oils. But every test I've ever seen that WAS NOT sponsored in some way by Amsoil shows that the viscosity DOES increase with age. A great thing for longevity and extended use protection, but NOT NECESSARILY a great thing for the tolerances in many of these modern engines.

A 10 second search netted this report:

http://neptune.spacebears.com/cars/stories/amsoil.html

Of particular note:
This is it. Amsoil is done! The oil exceeded a year in service, with 14,000 miles on the ticker, and no filter change! Well, if the year hadn't ended, we would have had to change the filter now -- it finally reached our insolubles cap, 2,000 miles after Mobil 1. The main thing that stands out on this, our final Amsoil sample, is the ridiculous viscosity. This 5W30 oil has now thickened out to a 15W40 -- argue whether it matters if you like, but we believe engine builders spec an oil for a reason, and this oil is far, far thicker now than intended for the LS1. Switching to our flush Mobil 1 netted a nearly instant 10% improvement in fuel economy, and the engine runs a heckuva lot smoother too.

 

Blackstone labs is not a fan of any oil in particular.They are not bias.You can believe all you want that it gets thicker.Oil and lubes just don't work that way but whatever.As I said before do some reading and asking of questions on bob is the oil guy site.World of info.Its not a bias site.