BuffaloZone said:Proof that cheap-O oil is just as good as a premium synthetic oil...or do they just have short pockets?
jstreet0204 said:apples and oranges. The octane rating of fuel does not make it better. If your car is not tuned for higher octane fuel, it can do more harm than good.
bham_gt said:I've actually seen proof that synthetic oil does make a difference. I've seen engines torn apart that ran only synthetic oil and ones that ran regular oil. The ones that ran synthetic oil still looked brand new. There weren't even really any burn spots on the heads or anything. The ones that ran regular oil were all burned looking. Synthetic oil definitely does make a difference.
Kilgore Trout said:If you are referring to my comments on another thread the point I was trying to make is that Motorcraft 5W-20 is the best choice for most people. If you diagree with that assessment perhaps it is Ford that you should be arguing with. I am simply going by the manufacturer's recommendation which I have found to be correct 99.999999% of the time.
BTW, Motorcraft 5W-20 is a synthetic blend.
Additional info from the BullittArchive Mustang Oracle:
http://www.bullittarchive.com/html/modules/articles/article.php?id=37
Still, apples and oranges. Your car will run the same on dino oil as it will on synthetic. My point was that the comparison bewteen oils and octane rating doesn't make much sense.BuffaloZone said:That's why I wanted to mention "modified" engines instead of stock. When mine was new it did great on 89 octane, but now it is tuned for 93 octane. And when I get my KB I'm sure it'll be tuned for at least 91 octane.
newstangman said:I canshow you my 1958 Cadillac - Non-synthetic oil (Penzoil or Quaker State) changed every 2,000 miles w/filter since new. No sludge, varnish or visable wear. Burns zero oil at 2,ooo miles. The KEY is to change your oil often to remove the acids that build up as a resultant of combustion. Acid is a killer and it is suspended in synthetic and non-synthetic oil. Also, ALWAYS change your oil when it is HOT to remove the acids!!! Both synthetic and non-synthetic oils can do the job - the KEY is to keep your engine clean on the inside via 2,000 miles oil changes!
StangPro said:Ford went to the 5-20 blend strictly for emissions reasons. There is some evidence that this oil is not good for engine life.
Kilgore Trout said:If you are referring to my comments on another thread the point I was trying to make is that Motorcraft 5W-20 is the best choice for most people.
Kilgore Trout said:If you diagree with that assessment perhaps it is Ford that you should be arguing with.
Kilgore Trout said:I am simply going by the manufacturer's recommendation which I have found to be correct 99.999999% of the time.
Kilgore Trout said:BTW, Motorcraft 5W-20 is a synthetic blend.
jstreet0204 said:Still, apples and oranges. Your car will run the same on dino oil as it will on synthetic.
jstreet0204 said:My point was that the comparison bewteen oils and octane rating doesn't make much sense.
You are not likely to see enough of a difference to measure. The benefit is in its ability to last longer without breaking down.BuffaloZone said:Even when people can prove more RWHP with synthetics...and cooler temps? Why is dino oil so cheap?
BuffaloZone said:So...you use 87 octane fuel in your Saleen...and you wouldn't even try to compare the 87 octane to 93 octane?
Why is 87 octane cheaper than 93?
jstreet0204 said:You are not likely to see enough of a difference to measure. The benefit is in its ability to last longer without breaking down.
jstreet0204 said:Cars are tuned around an octane rating.
jstreet0204 said:If you run 93 on a stock mustang tuned for 87 you are likely to lose power, and develop carbon buildup. So in this case 87 is better. And no I run 93 because my car requires it.
jstreet0204 said:My car also requires yellow touch up paint which cost more because you can't get it just anywhere. That doesn't make it better than blue touch up paint.
jstreet0204 said:I am not debating that synthetic oils have their benefit. That is all I run. Again my point is that you are comparing apples to oranges. A better comparison might have been detergents in different brands of fuel.
2001sleeper said:synthetic oils are designed to last longer and that is where they shine and prove superior. if you have a modified engine and religously change your oil around 2500-3000 miles a regular oil will be just fine. my stang is blown and i use the motorcraft blend with good results. the lower viscosity of a full synthetic oil is prone to more blow-by as boost increases. There are numerous arguements as to which oil is better, but where you stand is how you treat your car and what your specific needs are. don't be a follower and go on hearsay, understand the principles behind your individual engine and behind the oil you choose.
With all of the data collected, the computer on the AutoDyn did its whirring and grinding and spit out a chart that was quite revealing (see chart in sidebar article). The results were fairly definitive and clear-cut. The synthetic oil produced more horsepower (Royal Purple was used in this experiment). In this test, the peak power gain was shown to be in the range of 8-plus hp.
The test was repeated to ensure absolute integrity of the findings, and the results were the same—the synthetic proved to be a more successful producer of power.
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