You are better off with the Rotella than the Amsoil for many reasons.
1-your engine wont last any longer with the Amsoil.
2-unless you are going 15-20,000 miles on oil changes you are wasting your money.
3-the Amsoil does not protect better, it just lasts longer.

There are only 2 reasons to use a true full syn lubricant, cold weather lubricity, and service intervals.
Full syn will flow better in sub zero temps and it will last longer.
So unless you live inside the arctic circle or are not planning on changing your motor oil/gear oil/ etc. for a very long time you are wasting your money.

 

Hi all, check out Motor Oil 101 - Bob is the Oil Guy

It may change your thoughts on what oil to use. It's a lot of info if you read all of the 'chapters' but very informative.

 

Gosh, we've all read BITOG and seen the bias that can sneak in there. Informative, but not always unbiased.

 

One of the most important things for our V8's is higher ZDDP levels for the flat tappets, which many oils had when the Rover V8 was being produced, but have since declined drastically. Rotella T has higher levels. Or at least used to, most of the ZDDP levels I see for it are at least a year old. The most recent number I saw was 1400ppm, and that was a year or so ago IIRC.
There are higher one's out there, but I'm not particularly interested in paying $10/qt.

 

Exactly.
Now add to that the ready availability of the motor oil.
I dont want to have to drive across town everytime I need to add oil.
Or if I need more oil while on a trip I dont want to waste time searching for it.
Or order it on-line and have it be back ordered or delayed delivery because of weather.

 

That somebody questioned this wisdom at all again is almost funny, seeing the title of this particular entry. It works best. The subject line indicates that. I have had it solve the vast majority of the ticking in my 03' Disco, which I had all kinds of issues with. For future readers... Just Do It! No more need for debate on this. Read all the great feedback for these products. And consider the total viability of the source.

 

I think once a debate such as this gets going, it becomes easy to over-think and over-analyze the minutiae of everything. The important point, of course, is regular maintenance, and there is no component so blessed by the Mighty Rover Gods that it will transform your Discovery into a golden flying chariot. So just go change your oil with whatever your choice of oil & filter may be and get on with it.

 

Mine is still bigger ! Lol

 

Still wasting your time with paper elements. How about surgical stainless mesh filters which are reusable and filter to 35 micron level. Proven and tested in Aerospace, military, Formula 1, and industrial applications where longevity is a must. Costs a bit more, but you **** people will spend more than the initial outlay in the long run. Open, inspect, clean and re-install. DUH....... Logic seems to be lacking sometimes.

Stainless Steel Cleanable and Reusable Oil Filters for your Motorcycle and ATV

MAK

 

There's a reason automobile manufactures switched from element type to spin-on oil filters (though I still have element type filters on my Series Rovers).
Also, a 35 micron particle is 50% larger than what quality spin-on filters will pass.
Add in the fact that it would take me 160,000 miles of driving just to break even on the cost of it and I think I'll pass.
But hey, if you like it, use it.