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89dak
Dodge Dakota
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7/28/2004
01:55:04
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 Subject: high mileage oil?
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does this stuff really make a difference? my 89 has over 142,200 on her and the commercials advertise it should be used after 75,000. does it make a difference or would i just be throwing my money away on more expensive oil?
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?
Dodge Dakota
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7/28/2004
08:07:52
| RE: high mileage oil?
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Don't waste your money ..
It is basically the same as a heavier
grade oil like 20 W 50 ...
( thicker oil doesn't leak , or go past worn rings
as fast )
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AmsoilSponsor
DakotaEnthusiast
7/28/2004
09:09:23
| Amsoil high mileage www.american-synthetic-oil.com
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Most of these oils appear to be marketing gimmicks. I am not saying they are "bad" oils ... just gimmicks.
It appears that many owners are going to "high mileage" oils for no reason other then they have a high mileage engine ... whether or not their engines are demonstrating problems.
Most "high mileage" oils are just basic conventional (crude or dino) oils that are formulated a bit on the thicker side of their respective viscosities, plus they add about 10% esters in the base oil for their slight seal swelling effect, should the older engine have seal leak (the additional swelling properties are very very minor). FYI - all oils have esters as additives for seal swell.
Some people are switching if their vehicles are consuming oil. The main reason people see reduced oil consumption (using high mileage oil) is due to their thicker viscosity.
Repeat -- Most of these oils appear to be marketing gimmicks. I am not saying they are "bad" oils ... just gimmicks.
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A recent issue of "Lubes 'n' Greases" (a well respected trade journal) had a article on the high mileage oils and Valvoline (holding 80% of the High Mileage Oil market) attributes them to "padding their bottom line quite nicely". Valvoline "DID NOT" mention the benefits of using such a product but they sure were pleased with the results of the marketing.
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For high mileage vehicles that have not been maintained well, or there is no way to determine how they were maintained, you might consider using these oils. I think the best thing about them is that they are thicker oils, so instead of being like most Xw-30 oils which are thin 30wts, these are on the high end. Perfect for aging engines, and the added esters do help a little bit.
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Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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Vic
Dodge Dakota
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7/29/2004
01:34:44
|  RE: high mileage oil?
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Well, Ive done it. I changed the motor oil, differential and transmission fluid in my Subaru and my Dakota and I seem to be getting better gas mileage now. Of course the fuzzy dice hanging from the truck mirror probably help. Now I am considering changing the oil in my old air cooled VW Beetle to your 10W-30, but I recently heard that synthetic oil does not carry heat away; a trait that is very necessary for these cars since they do not have oil coolers. Could you comment on this for me without complicated explanations or charts? Thanks.
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AmsoilSponsor
DakotaEnthusiast
7/29/2004
06:57:47
| Amsoil VW = www.american-synthetic-oil.com Amzoil
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Vic,
True, in an air-cooled engine, the oil actually helps cool the engine thru heat transfer, and I believe VW calls for a 30 wt. because of its shear resistance and durability under extreme conditions.
First, which VW do you have?
Second, in older VW's, I believe that VW air-cooled engines recommend a straight weight or mono-grade oil, not a multi-grade. However, a multi-grade is recommended in newer VW's.
Where do you live and what is your climate (Winter and Summer)?
Amsoil recommends one of the following (and I just ordered the HDD for my neighbor last week):
2002 VOLKSWAGEN BEETLE 2.0L 4-cyl
Engine Oil, Grade 1 ...... SL
Amsoil Series 2000 Synthetic 0W-30 Motor Oil
Amsoil SAE 5W-30 Synthetic Motor Oil
Amsoil Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil (HDD)
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Synthetic oils are fine to use in air-cooled engines. Honestly, the only VW's that I have been close to are my neighbor's and the modified ones at the tracks, and some of the modified VW guys are using Amsoil.
__________________________________________________
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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Vic
Dodge Dakota
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7/30/2004
00:08:21
| RE: high mileage oil?
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Steven, I have an older 1970 VW (4 cyl, air cooled) with a 1952 MGTD fiberglass body on it an live in MA.
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AmsoilSponsor
DakotaEnthusiast
7/30/2004
06:06:29
| Amsoil VW = www.american-synthetic-oil.com Amzoil
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WOW, a 1970 VW.
First, my buddy in high school had a 1972 so I do know SOME things (but only a few things) about the older vintage VW's.
Second, my reference books do not go back that far.
For conversation and to let you in on my thought process ... here is what I can share with you.
VW designed the aircooled engine to be driven as soon as it was started, because it was designed in the 1930's I believe to be used in snowy German winters. Like in America and elsewhere, not many houses had garages then. Therefore, the VW engine was designed to "warm up" faster, which reduces wear better than idling.
I believe that the choke is automatic, and this means it opens up as as it heats up. It's rate of opening assumes that you'll be driving the car and warming the engine quickly after start-up.
Also, low rpm's produce low oil pressure, so idling takes extra time to circulate the oil. Driving immediatly after start-up ensures the engine rpm is higher and the oil gets circulated as fast as possible.
The 1970 VW was designed for a stratght weight oil, so if I were you I would simply choose the best conventional straight monograde 30 wt. (Summer) and 20 wt. (Winter), that is available on the shelf. If you are looking for something more exotic, look for a monograde racing oil which may be available from your local motor cycle dealer. I can not make any recommendations as to whether synthetics would be better suited for your engine, because I am not an expert in vintage VW's.
__________________________________________________
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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