They make some pretty hefty claims about their oil. Longer change intervals better oil, better filters etc. Just wondering if anyone uses them.
I plan to go synthetic as I get a free oil change this week from the dealer due to their not tightening the oil drain plug last time. So while I get a fresh douching of my engine, I will simply change out when I get it home. Was thinking I would order the Amsoil from their site today.

 

I've done some research on the matter and all the tests report it is the best, however the cost doesnt not justify the benefit for me. Mobile 1 was second with all things considered. So I go with full synthetic Mobile 1 myself.

 

I run Amsoil XL. Locally it is cheaper than Mobil 1 or Royal Purple, so I don't mind getting the best

 

Hemi or CTD?
I'm running Valvoline Premium Blue Extreme 5w40 in mine, liking it so far.
I liked it because the bottle matched my truck! :-)

-John

 

i"m running AMSoil in my truck every since first oil change. Did a Oil sample at 20000km and viscosity of the oil was still like new will do another oil sample at 40000km

 

There is NO question that Amsoil is a quality product, HOWEVER, you need to do exactly what AndiDarko is doing if you choose to run it in an MDS engine!

The tolerances are VERY tight in this engine and the proper viscosity is crucial to proper MDS activation/de-activation, so much so that there is a Service Bulletin out that states Dodge will NOT honor warranty on an MDS equipped engine if ANY other weight oil other than 5w-20 is found in it! Or at least so I am told by the Service Manager at my local dealership who I play golf with on occasion.

One of the reasons that Amsoil keeps it's protective properties for so long is that it actually gets thicker over time of repeated heating and cooling (very well documented). Some tests have shown that 0w-30 oil will actually test out to around 20w-40 over time (although the test I viewed took over 16,000 miles to achieve this thickness).

I'm NOT saying not to use Amsoil, but I'm saying that you either need to have it tested periodically OR to change it out at much shorter intervals than the manufacturer states it will last. The Mopar performance shop in my area loves Amsoil, but strongly recommends that it be changed at 6000 mile intervals in MDS engines...

 

Thanks. I learn something new every day around here. Yes I would most likely change at every 6k anyway. Still that is way better than every 3K. Heck if I changed it in November it would get me into March at least....I have other vehicles I drive in Winter as well. I have a n '06 V6 Rav4. Go ahead and laugh, but that thing is really quite quick, and does really well in deep snow with the auto 4 wheel drive.
Thanks again for that MDS info.

 

I've been using Amsoil 5w20 XL oil and their filter and changing at every 6K miles. But just now coming up on 16K miles. So not a lot of data to share. But haven't had any problems that I'm aware of. So only time will tell.

 

If you change your oil every 6,000 miles practically any name brand oil on the market will be more than sufficient. Why do you think the manufacturer even recommends 6,000 mile intervals now?

I was using Valvoline full synthetic for awhile and sent in for an oil analysis when I changed it out after 6,000 miles. Everything came back perfectly fine and they (Blackstone Laboratories) said I should try to go 8,000 miles.

Usually Amsoil is significantly more than you can get any of the synthetics from either Penzoil, Valvoline or Mobil. Especially considering Wal-Mart sells all 3 of those anywhere from $21-23 per 5qt jug.

I recently just went 9,000 miles before my last oil change and have sent a sample of that oil in for analysis as well. I switched back to Mobil 1 during this oil change too since the price of it has dropped compared to when there was a shortage for them.

Again, if you are only leaving it in for 6,000 miles, so long as you stick with a name brand, especially a synthetic, that meets Chrysler specifications you will have nothing to be concerned about.

 

Amsoil just recently came on board with us on our SEMA build as a sponsor. We look forward to running their products. Good to see you all like them from your own experiences.