I've used Mobil 1 for years
right now I'm running Amsoil in my truck
synthectic oil is what most here are using

 

15 is about average, and it is what I get in mixed driving with my 07. Personally, I would go with Mobil 1, although Valvoline is an excellent dino oil.

 

i use penzoil and i get 12.8 and i have a lift. i also get 28.4mph

 

I second the AMSOIL, it's what I switched to, and the 15 being about average.

 

Clark @ jim wolf technology told me to run Mobil 1 0W40, same oil as in the GT-R and oil they use in all the turbo cars they build.

 

Truck it spec'd for 5w30 or 10w30 depending on temps. I would use what ever was on sale between Peenzoil platinum< QS horsepower, M1, Castrol edge. If you were doing the 3k mile oil change and regular non synthetic oil will do. Amsoil is great but not really worth the money if you dont plan on running the oil out past 10k miles or more. Just my thoughts.

 

All the brand name oils are good, synthetic and conventional.

 

Castrol GTX, 5w30 for me since the very first change. I typically change it every 4,000 miles or so. Using a Bosch filter.

 

I run Amsoil Signature Series oil and Amsoil oil filter in mine. I average (in WV -- think LOTS of mountains) between 14.5-16 MPG. On highways on flat (just got back from Missouri) I was doing 17 MPG average. Heck, even when I towed the family camper (7000+ lbs) in western PA I pulled a solid 10 MPG average. A buddy of mine uses Royal Purple and gets good service from it, but not as good of MPG.

I have always used Amsoil and have NEVER had any complaint. Let me know if you want some more info or pricing (don't everyone jump on me at once -- I am in process of becoming a site-vendor).

-S

 

im using mobil 1 10w-30 i honestly do not like it.. it made my titan have a knocking sound.. i guess thats what i get for cheating on amsoil

 

I don't know what is best for the Titan, I guess it is whatever fulfils your requirements best. I have used Mobil I synthetic in all our vehicles in the last 20 years. I have an 08, KC, BT SE and I changed the oil and diff fluid at 1000 miles to Mobil I products. Hard to say I could tell any difference. At 5000 miles I changed the oil to 5W-30 Valvoline SynPower synthetic (got a coupon deal so thought i would try it). Sounded the same and drove the same with the same mileage. At 10,000 miles I replaced the oil again with the same Valvoline SynPower and noticed it came out somewhat darker than the Mobil I did but the Mobil I had 4000 miles at changeout and the SynPower had 5000 miles? I did not do an analysis and black is not necessarily bad. I also changed the rear end fluid again at 10,000 because I was going to tow 5000 lbs for about 400 miles and the forums are filled with horror stories about our differentials.

 

I use Mobil1 5w-30 and a Mobil1 filter. I've changed my oil twice so far on my 2008.5 big tow. The oil was still relatively clear after almost 7k miles.

 

I use the exact same combo in my 08 and changed it twice as well, but at 10k miles...

I was shocked at how clear the oil was still when I drained it out...

 

I'm a bit OCD so I send oil samples to Blackstone about every 5000 miles and put at least 10000 on the oil. I ran Mobil 1 5w30 for a long time and according to the oil reports, the Titan loves it, very little metal content and the remaining contents were smack on the average. I've recently switched to AMSOil and I don't have enough mileage or data to plot trends yet but i'm pretty confident AMSOil is comparable to M1. As long as you stick to 5w30 and regular intervals, you'll be fine with whatever you prefer to use.

 

i got the whole mobil 1 combo*filter adn oil*, but i was wondering has anyone used the Lucas Oil treatment with it? and how often should i change the rear end fluid? i know we got those awesome problems :-|

 

I am going to try to run the Amsoil for a 15k duration and see how it comes out. Will send away for samples when I get there and report back. The truck is a daily-driver and does some towing so it should be a fair assessment.

-S

 

I ran the amsoil for 6k miles, changed it the other day, and it had the consistency and look of black coffee.

I am trying the Mobil 1 syn now, and I am not liking the noise the lifters make, Amsoil Imo is better.

I'll try another brand Syn oil in anohter 3k miles.

 

Ive always used castrol gtx in my cars but for my t whats the best weight i live in san diego its hot weather right now, i have 69,000 miles on it..

 

i have bin using kendall synthetic it is super quite in my titan it is kind of a pain too get though i can onely find it at firestone dealerships around here i think i will try castorol edge at 8 dolars a quart it had beter be good!

 

if your looking for performance i think the only one is royal purple that can give the extra 1-2 hp gain and or mpg gain. my dad uses it in his 07 mustang and did notice small gains.

i use valvoline sythentic and have used the amsoil before. 5w30 is recommended in the titan
both are great


now.... i used to repair the Lucas racing RV ... this is no joke they ran 30,000 miles on one oil change in their RV, and over 15000 hours on the generator cummins engine of coarse. but i aksed them what they ran on their drag car morgan lucas races. they of coarse use lucas oil.
and also the standard gasoline engine they say 15000 miles minimum, lucas oil will not break down. i think it may be good to change the oil filter out at 3k and top it off. i guess if your looking to do 4-6 oil changes in 100k that will work haha

 

I use mobil 1 0w-40 with the K&N filter and change it every 8K miles or so. Have done this since new, engine is quiet and doesn't use any oil between oci. I like the 0w-40 due to my climate, 90's in the summer single digits below 0 in the winter, the truck does the majority of its towing the winter, i just find the 0w-40 to be perfect. 15-16mpg.

 

dc909,

Yeah, I have used Amsoil a long-time and that is about as poor as it will ever look, and as far as it will ever break down. "Black coffee" is actually a VERY good way to describe it.

Oh, and just to be clear, we are not talking about "truckstop black coffee" that has been sitting and sludging for 48 hours... but freshly brewed black coffee.
Sorry, couldn't resist, I read your post aloud to my wife and her immeadiate response was "is that Flying J coffee he is talking about... that stuff is almost like pumice."

-S

 

dc909,

Yeah, I have used Amsoil a long-time and that is about as poor as it will ever look, and as far as it will ever break down. "Black coffee" is actually a VERY good way to describe it.

-S

it is scary when people say they are going to try to get 10-15k miles on a single oil change.

I thought I was pushing it when I went 6k, and the consistency and look proves I went a tad long ( or at least in my opinion )

I just couldn't beat the deal they had going at the local parts store on Mobil 1 and filter ( 5qts and filter for 29.99 ) full oil change for 48 bones! and full syn to boot!

Like I said, I'll give this oil a 3k mile go, and check it. I saved some of the Amsoil to send off to get tested, maybe like 2oz.

I just never have changed an oil where it came out looking so badly and felt like I mentioned above, black coffee.

and tell your wife, flying J yuck! that is as bad as Horton's lol

 

Doesn't really scare me. I have run Amsoil (albeit not in the Titan) for a combined total of almost 1,000,000 miles (long-haul rigs and multiple vehicles) over the years, all on extended drain intervals (6k + per change) and never had issues with it. Never have had an engine issue related to oil yet. Stupid stuff like fuel pumps and such of course, but not oil-related. The "black-coffee" remark I made was more to state that I have always been surprised when changing Amsoil... that fresh "black-coffee" look is about as bad as it will ever get, even at 15k changes in harsh conditions. It really depends also, obviously, on what sort of filter combo you are running with it. If you run a high-quality filter as well you won't have any issues.

Besides, between Amsoil and a high-quality filter it is too d*mn expensive to change every 3k.

-S