Mavel's Mystery Oil and STP

 

Reviews from an armchair in front of a PC and with a closed mind are unlikely to be of benefit.

As Avos said, "...there is no discussion anymore if you are not able to conceive that pressure has an important role".

Have to admit, though, that I would not be too happy about testing a coolant consisting of sea water and kerosene.

 

Exactly, that's why I'm suggesting that not all the glitters is gold.

Let's not get into another p*ssing match over who's got a closed mind. I don't think you're in a position to point fingers.

 

I'd be ready for a vote on that. And another on impoliteness. Loads of posts to back THAT up.

 

Those in glass houses should not throw stones.

 

If it is too much effort for you to make a contribution, than better leave it. We have all noted your averseness, so no need to drag that on.

Let’s move on, and anyone that has good technical info about Evans please do not hesitate to contribute, the more we learn about the product the better anyone can make a decision if a switch would be more beneficial for their setup or not.

I’ll keep on posting my experiences for the coming weeks as I also slowly crank up the power as well.

 

I look forward to seeing your results.

 

I think that we have all seen those miracle products come and go. Our sentiments are that these products are a genuine waste of money. However you can buy them if it makes you feel better.

 

I don't want any miracle product but I would like a very boring but workable one that avoided a pressurised cooling system. Testing what's on offer will reveal something, guessing will not. Scientific experimentation has worked whereas philosophy and religion didn't. The sun really doesn't go round the earth and orbits aren't perfect circles except when you really understand Einstein.

 

Good for you!

 

Putting aside posts that want to reduce the discussion to personal squabbles, it appears there are two points

1) is there a technical problem serious enough that action needs to be taken

2) if yes, is there a fix available

Opinion is definitely divided over point 1) with me (obviously) in the camp that believes no action is required above and beyond standard maintenance on the existing system.

WRT point 2) I don't believe there's any existing data available indicating that a pressureless system will be an effective fix. Avos has volunteered to do some testing but I'm not sure any of us or our cars will be around long enough to reach a conclusion one way or the other. Even then, we'll have just one sample...........

 

If it works for him I may well become #2 since the so-called "standard maintenance" is a very bad joke when it requires such effort and huge cost to change e.g. the valley pipe.

 

I'm with you. I replaced all 18 coolant hoses about a year ago, and the peace of mind since then has been great.

That valley hose is about $27 but costs nearly $1000 to change. I would willingly spend another $2-300 to avoid (or even defer) any more coolant hose problems over the remaining lifetime of my STR.

 

If the OEM thought a depressurized system would reduce maintenance costs and make the car more affordable, they would have already done it. However, the 15-17 PSI that is held in the cooling system actually raises the boiling point and helps to keep the engine from overheating.


I have seen so many claims over the years, as have the rest of you, that makes me wonder why these "miracles" are offered to the general population when the sure catchment audience is the OEM.


If it was as good as claimed, it would have an OEM part number and Evans would be smoking cigars.


Enough said. Bye.

 

Only if it made an appreciable difference within the first few - probably 3 - years. Which it wouldn't.

Also, it would have to keep emissions as low and mpg as "high" (joke for an R model, the only cars we're debating). Which again it wouldn't.

However, I'm not in the first few years (car is heading for 11 years old) and not primarily thinking about small effects on emissions and especially not that bothered about a small mpg change.

Different reasons so different outcome. Manufacturer designs to a spec; I have a different spec which manufacturer design fails to meet. (With his background, Mikey should understand this stuff.)

(I actually think that the valley pipe probably does not meet Jaguar's spec but that's another matter.)

Your talk of "miracles" is plain wrong, as I already posted. If you can't grasp the above it would help if you stopped commenting. I see a bunch of threads where your posts not only don't help they actively hinder. Not good. I'm a little surprised you've not been banned.

Enough said.

 

I certainly do, and fully understand your goal.

My reservation is that this fix will not really achieve much. The time period required to prove it one way or the other, given the average life of the valley pipe with the standard cooling system, might be more than any of us is willing to wait. The cost of getting it wrong might also be an engine or two.

 

ECT will tell me if temps rise. If there's no longer pressure then that will remove one thing that negatively affects the valley pipe. If mine doesn't fail for the next many years I'll be happy. I have little belief that will occur with the pressurised system. We're seeing more and more that fail, here and on UK forum, STR & XJR. I don't want to be another one whose valley pipe fails.

 

An unknown is how much dynamic pressure the valley pipe is under in addition to the static pressure. It's certainly higher than zero as is every component that is having coolant pushed through it. Other than Jag giving up some internal engineering documents, I don't think we'll ever know either.

 

Exactly right. Manufacturer's spec aim for low initial cost, and good reliability during the warranty period. No one at Jaguar stays awake at night worrying about the possible failure of coolant hoses after 10 years.

But WE do. We are the poor bu**ers who own these post-warranty Jags. We're trying to add power, get them to last longer and make the odd cosmetic changes. None of which Jaguar cares about. Our specifications ARE different, so may well require non-OEM products from third parties.

 

Yaaaaawwwwnnnnnn......