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Synthetic motor oil

8536 messages,  Last post on Nov 21, 2009 at 9:34 AM

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#51 of 8536 $$$ by rascal8 Feb 15, 2000 (2:14 pm)
As I, and others, have posted many times before full synthetic will save you money in the long run because you can extend your oil drain intervals safely. This has been proven. Amsoil, as an example, warranties their oil for 25,000 miles. All you need to do is keep the oil clean by changing your oil filter or using a bypass oil filter. If you want to change your oil every 3,000 miles because it makes you feel better go for it ! There are many prior posts on this subject within this message board.
#52 of 8536 engine rebuild by tech Feb 15, 2000 (5:15 pm)
why rebuild at 150k or 200k when you can potentially go to 500k or better because the engine doen't need to be rebuilt. not to mention most people don't have the skills or resources to rebuild.
#53 of 8536 tech by markbuck Feb 15, 2000 (5:28 pm)
How many miles does your amsoil vehicle have on it? BTW, filters don't remove acids.... I live where we get nightime lows about 40 lower than daytime highs (usually around 0 in winter). Figure the blended oil helps pumping at low temps. Only run full synthetics in my two and four stroke motorcycles and truck when exposed to <-20F temps. Yawl have been sold a bill of goods on the extended oil change intervals.
#54 of 8536 buck by tech Feb 16, 2000 (6:10 pm)
#1. i don't use amsoil though it is a very good product.i choose to use red line. my 87 van had 345,000 miles on it when i traded it for my 99 pu truck. it still was running like new, previous vehicles never got anywhere this mileage using hydro oils at 3k change intervals. if red line synthetics were snake oil and couldn't handle the acids no way i would have the that kind of mileage. anyway we all choose what nwe think best good luck
#55 of 8536 re: extended change intervals by tonewheel Feb 16, 2000 (6:16 pm)
I have to agree with the above posting. Oil filters do a good job of reducing particulate matter in the oil, but they are incapable of removing the harmful acids that result from combustion. These acids (and other nasties) are held in suspension in the engine oil, and the only way to get rid of them is to change your oil. And IMHO, the only benefit derived from syn blends is cold weather starting. You don't realize the same benefits you get from 100% syn.
#56 of 8536 RUN DOWN OIL by celiane Feb 17, 2000 (2:45 am)
Is there truth to the talk of Synthetic RUN Down from the piston rings. If, the vehicle is not run for a couple of weeks. Does this cause potential oil starvation? Is it just too watery to keep parts lubricated at a stand still? Please, say it ain't so. Mobil-1 user.
#57 of 8536 run down oil by mazda323 Feb 17, 2000 (3:44 pm)
I've read that synthetic oil contains additives to prevent starvation at start up. These additives help the oil to coat metal parts and remain on those parts. However, if your car is parked for 23 days, I believe that it will run down, just like conventional oil (isn't oil is a liquid after all?). When you will start you motor after any period of rest, the synthetic oil flows to moving parts faster, reducing wear. Check out http://mr2.com/TEXT/synth_oil.txt The article has a lot of information on syn oil (it sounds a little like a sales pitch, but not as much as the info you get from amsoil or mobil). Check out the Fluid Related Information http://mr2.com/Articles.html.
#58 of 8536 add packs by garth Feb 17, 2000 (5:21 pm)
are add packs any different in synth oil vs. dino oil? i have not heard that they are (thus, any metal coating additives are just as likely to be in dino oil...)
#59 of 8536 #58 by rascal8 Feb 17, 2000 (6:14 pm)
Excellent article that articulates everything synoil producers and engineers have said about synthetic; unfortunately, you can load a dump truck with empirical evidence and people will still not listen. "Car guys" generally have their own "system" for maintaining their vehicles and they will always believe theirs is the best method. Interesting stuff at the end of the article about breaking your car in with dino oil for about 6K miles before using synthetic - have heard all kinds of advice in that area. What they wrote sounds logical though.
#60 of 8536 by ruking1 Feb 17, 2000 (8:04 pm)
Add packs for mobil one anyway are the same as conventional oil. The base lubricant, synthetic is the difference. The metal additive that prevents a certain amount of metal to metal engine contact is zinc. HOWEVER remember all the trouble the people that do coatings have gotten into??? ie, duralube etc etc ( I am not singling them out just using them as an i.e. Oil manufacturers surely dont want to even be in the same neighborhood as that pothole.

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