Oils Aint Oils <Merged Thread>

[dule]

And after you drain it you can filter it and use it as fuel in your diesel 4wd. how good is that? So which vegetable oil is the best for XR6T? lol

[bjcrown]

Valvoline (You know what I mean!) Full Synthetic 5W-40 for me.

What do you think of this oil?

Edited 29/05/08 10:33 AM by bjcrown

[Lawsy]

Defiantly not attacking your post or what your have to say as this is how we find out information Lawsy. So sorry if you have taken it that way.

But you just proved my point with your last post. Mobil One 0W-40 Well Exceeds all Ford grading for engine oil, A lot of people use Nylon which does not meet all of Fords gradings. 0W-40 can act as everything between 5W,10W,15W it has a lot wide range.

Nissan, Porsche ect. must have planned on eskimos buying there vechiles.

No, I never thought you were attacking me. By your post, I infered that you thought I was attacking the 0w-40 oil and saying it was bad, I wasn't. It just isn't suitable.

The Nulon and Royal Purple oils actually meet the exact specification, which seems to be a 10w-40 or a 15w-40. The Mobil 1 DOESN'T.

Let me repeat once more, what the most important property of an engine oil is.

Viscosity

I've just found a viscosity graphing tool.

I'm going to make up a bunch of graphs from the oil companies own data sheets and show them to you soon (ie, when I get around to it in the next few weeks), but right now, I'm going to bed. (I had a lot typed up, massive post was here, so be thankful I found this graphing tool when I did).

Just quickly on my first results I graphed though (and take this as the very tired, over exagerated midnight rant that it is):-

0w-40 (any brand) is going to send your 4l I6 turbo motor to hell. It can not provide the cold start protection this engine needs; my initial assumptions were wrong. Mobil 1 0w-40 does not hold its low temp viscosity for as long as I thought (its still bloody good though!), and thus does infact act less viscous than a 5w (even though they are based on the same stock) up until around 20°C (20°C after I initially thought (I was in the ball park at least)), and later than your average cold start temps.

So there.

Basically, from my first graphs, 0w-40 really should not be used in the Ford inline 6; the oil companies own data sheets are 100% backing that recommendation up.

10w or 15w people, you need to run 10w or 15w oils to get the best overall performance/economy/engine wear/service life out of your motor.

[jbute]

What ever, your making me start to hate oils. I'm not using any oil anymore

[Lawsy]

Hehe, you're good value mate. Like I said earlier, I've been trying to puzzle this out for ages, but didn't properly sit down and get all the data sheets myself, only some results. So I don't blame you, its a bugger of a topic, and as you can see, my first stab in the dark with the Mobil 1 wasn't perfect (close enough isn't really good enough if it costs you a motor now, is it...), so we'll come up with a new spin on things when I graph it all :D

When I eventually get around to it, I'll be able to get my own results for various oils tailored to our temperatures and engines. I have some sexy graph in my head and I just hope it turns out the way I'd like (that is to say, easy to read and gives a lot of information without being confusing).

I really hope that amongst my jibber jabber someone found help/information that put there mind at ease/made a decision easier.

Peace out

[tab]

You certainly don’t skimp on the information Lawsy

[Buf-Phoon]

Thanks Lawsy , I will stick with Royal Purple then

Can't wait for the sexy graph

[jbute]

Thanks Lawsy, It was a pleasure doing battle with you ! No great info mate & it has always been something that I would like to know more about you can read up on the net there is so much information but some conflicts with others so in the end it gives you an understanding, but you still don't know what to believe.

Your graph sounds sexy, look forward to it ?

Two helpful links : http://en.wikipedia.org/wiki/Motor_oil http://www.carbibles.com/engineoil_bible.html

Edited 30/05/08 11:10 AM by jbute

[Lawsy]

Ok I've just done a bunch of graphing and put them all into the one graph, its messy, and I'll seperate them another time.

Please note, I've been VERY liberal with my upper and lower limit lines. If I wanted to make them strictly to within the standard, things look significantly worse for the 10w-60 and the 0w-40's...

Anyways, here goes, its only a rough effort, and I couldn't be bothered sexing it up for you all...

Oh, I might add, check out what the 5w-50 does... That's fairly interesting.

And also, the 10w's converge if I plot them back to around -35, so what you see here is not the actual rated pour point viscosity, its a little more reaslistic (it gave us no more information.....).

PS, Royal Purple 10w-40 on a graph looks almost identicle to the Nulon, but is thinner slightly everywhere (its 3.5% thinner at 40°C).

Edited 31/05/08 01:13 PM by Lawsy

[Lawsy]

Haha, I just went away for a minute, came back and looked at my graph; good luck to anyone else trying to read it, lol...

I'll declutter it all and put only a couple per graph next time. But you ge the idea for now.