Oil Change
05-11-2000, 08:16 PM
#21
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No! Metal parts would sink to the lowest point, which is for shure not the filter.
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05-11-2000, 08:45 PM
#23
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Oil FAQ
A4 FAQ: Oil Change Interval
Note: This information is taken from a posting in the rec.autos.makers.vw.watercooled newsgroup by Randy
Hubbard (raceware@wwnet.com)
The subject of engine oil and break-in are ALWAYS a hotly debated issue by enthusiasts. Heres what I have
confirmed and/or know as a very experienced engine designer, engineer and successful racer:
1. VW-Audi uses a special "15W-40 factory fill oil" that you can NOT purchase. It is NOT the same as
over-the-counter oils and has special break-in additives. I have confirmed this personally face-to-face with
the lubricant engineer and lab technician at VW's Salzgitter, Germany engine assembly plant in both
June/November of '96.
2. VW-Audi changed the FIRST OIL CHANGE drain interval from model year (MY) '95 to MY '96 from 5,000
miles to 7,500 miles because some customers were experiencing delayed piston ring seating due to
DRAINING the "factory fill oil" BEFORE the 5,000 mile MANDATE of the Owner's Manual. The '96 Passat
Owners manual I have, P.N. 962.551.3A0.21 7/95, on page 128 CLEARLY emphasizes the FIRST OIL CHANGE
MUST BE PERFORMED AFTER 7,500 miles. The wording has been analysed to the nth degree in the VW
newsgroups and mail list, and no matter how anyone argues, they are unable to escape the reality that VW
does NOT want you to drain the "factory fill oil" before 7,500 miles.
3. For MY '97 VW of America has returned to the 5,000 mile FIRST OIL DRAIN because of outcry from
ignorant U.S. consumers. Rather than spend a fortune in time and money to *educate* U.S. consumers,
VWoA just gave up and returned to the 5,000 mile FIRST drain interval, while in Germany and the rest of the
World they INCREASED the oil maintenance drain interval from 15,000 KM, (9,300 miles) to 20,000 KM,
(12,400 miles). At some point it becomes a waste of time and effort to attempt to change the mind of
technically illiterate consumers...
In my 30 years of designing, developing and racing engines, I have learned a lot. I've spent thousands of
hours dyno and track testing engines, and still work directly with the German car manufacturers and
professional race teams on engine design issues. With changes in technology and engineering that many
enthusiasts are unaware of, "old wives tales" live on long after their useful life has expired. I just laugh when I
hear people talk about all the "junk" inside a new engine... If you could see how VW robotically builds engines
in Salzgitter, Germany you would truly be amazed! These engines are meticulously clean and inspected every
step of the way.
FWIW, I subscribe to VW's mandated 7,500 miles FIRST and regular oil change intervals. Today's engines are
built better, the oil is better, and there is simply no advantage in attemting to "second guess" the engineers
who actually test this stuff all day long for a living! As I've stated before, they didn't determine 7,500 miles in
the U.S. (and 9,300 or 12,400 miles in Germany and elsewhere) to be a safe drain interval, over a cup of
coffee or while having lunch. These are engineers and thay have very demanding scientic TESTS they conduct
in accordance with the Society of Automotive Engineers and the American Petroleum Institute, and DIN, etc.
to determine these drain intervals. Engineers and scientist must deal with FACTS not opinions...
The bottom line is pretty obvious... Myself and several others in the VW newsgroups have submitted oil drain
samples at 7,500 miles to labs for analysis. Result...no surprise! In ALL cases the oil was fully suitable for
continued service and showed NO unusually high contaminants or metal particulate. I will be sending in my
15K oil drain sample in a few weeks and expect the same results as the first oil drain at 7,500 miles. The
doomsdayers and well meaning but mis-informed enthusiasts can spiel all the hogwash they want, but
independent scientific lab tests confirm that VW engineers are 100% correct in their mandated 7,500 mile
FIRST and regular drain intervals. No ring seal issues on my engine. In 7,500 miles I add 1/2 pint oil at MOST,
sometimes NONE at all!
What you do with your vehicle is up to you. As I have pointed out in the newsgroups, many times enthusiasts
create their own problems because they do not have enough technical expertise to make good judgements.
The 7,500 mile FIRST oil change is a real life example. Some well meaning, but uninformed VW enthusiasts
who thought they were doing the "right thing" by draining their "factory fill oil" early, have actually ended up
with delayed piston ring seating and high oil consumption. Just do what the factory Owner's and
Maintenance manual states and you will have a happy and long lived VW !!! VW engineers have their butts on
the line for 100,000 miles and they ain't no fools!
Hope I haven't bored you to tears, but for many this is a very emotional subject and they do NOT want to
be confused by facts or scientific evidence contrary to their beliefs. As an engineer I prefer facts over
opinions...
The 7,500 mile FIRST OIL CHANGE recommendation was to INSURE that people didn't drain the oil early, yet
some still did, and BTW some who report that they did (on the newsgroup) also complained about high oil
consumption as a result. This would obviously serve to substantiate that the VW engineers REALLY do know
of what they speak, and that you should abide by their service mandates, not second guess them.
Note: This information is taken from a posting in the rec.autos.makers.vw.watercooled newsgroup by Randy
Hubbard (raceware@wwnet.com)
The subject of engine oil and break-in are ALWAYS a hotly debated issue by enthusiasts. Heres what I have
confirmed and/or know as a very experienced engine designer, engineer and successful racer:
1. VW-Audi uses a special "15W-40 factory fill oil" that you can NOT purchase. It is NOT the same as
over-the-counter oils and has special break-in additives. I have confirmed this personally face-to-face with
the lubricant engineer and lab technician at VW's Salzgitter, Germany engine assembly plant in both
June/November of '96.
2. VW-Audi changed the FIRST OIL CHANGE drain interval from model year (MY) '95 to MY '96 from 5,000
miles to 7,500 miles because some customers were experiencing delayed piston ring seating due to
DRAINING the "factory fill oil" BEFORE the 5,000 mile MANDATE of the Owner's Manual. The '96 Passat
Owners manual I have, P.N. 962.551.3A0.21 7/95, on page 128 CLEARLY emphasizes the FIRST OIL CHANGE
MUST BE PERFORMED AFTER 7,500 miles. The wording has been analysed to the nth degree in the VW
newsgroups and mail list, and no matter how anyone argues, they are unable to escape the reality that VW
does NOT want you to drain the "factory fill oil" before 7,500 miles.
3. For MY '97 VW of America has returned to the 5,000 mile FIRST OIL DRAIN because of outcry from
ignorant U.S. consumers. Rather than spend a fortune in time and money to *educate* U.S. consumers,
VWoA just gave up and returned to the 5,000 mile FIRST drain interval, while in Germany and the rest of the
World they INCREASED the oil maintenance drain interval from 15,000 KM, (9,300 miles) to 20,000 KM,
(12,400 miles). At some point it becomes a waste of time and effort to attempt to change the mind of
technically illiterate consumers...
In my 30 years of designing, developing and racing engines, I have learned a lot. I've spent thousands of
hours dyno and track testing engines, and still work directly with the German car manufacturers and
professional race teams on engine design issues. With changes in technology and engineering that many
enthusiasts are unaware of, "old wives tales" live on long after their useful life has expired. I just laugh when I
hear people talk about all the "junk" inside a new engine... If you could see how VW robotically builds engines
in Salzgitter, Germany you would truly be amazed! These engines are meticulously clean and inspected every
step of the way.
FWIW, I subscribe to VW's mandated 7,500 miles FIRST and regular oil change intervals. Today's engines are
built better, the oil is better, and there is simply no advantage in attemting to "second guess" the engineers
who actually test this stuff all day long for a living! As I've stated before, they didn't determine 7,500 miles in
the U.S. (and 9,300 or 12,400 miles in Germany and elsewhere) to be a safe drain interval, over a cup of
coffee or while having lunch. These are engineers and thay have very demanding scientic TESTS they conduct
in accordance with the Society of Automotive Engineers and the American Petroleum Institute, and DIN, etc.
to determine these drain intervals. Engineers and scientist must deal with FACTS not opinions...
The bottom line is pretty obvious... Myself and several others in the VW newsgroups have submitted oil drain
samples at 7,500 miles to labs for analysis. Result...no surprise! In ALL cases the oil was fully suitable for
continued service and showed NO unusually high contaminants or metal particulate. I will be sending in my
15K oil drain sample in a few weeks and expect the same results as the first oil drain at 7,500 miles. The
doomsdayers and well meaning but mis-informed enthusiasts can spiel all the hogwash they want, but
independent scientific lab tests confirm that VW engineers are 100% correct in their mandated 7,500 mile
FIRST and regular drain intervals. No ring seal issues on my engine. In 7,500 miles I add 1/2 pint oil at MOST,
sometimes NONE at all!
What you do with your vehicle is up to you. As I have pointed out in the newsgroups, many times enthusiasts
create their own problems because they do not have enough technical expertise to make good judgements.
The 7,500 mile FIRST oil change is a real life example. Some well meaning, but uninformed VW enthusiasts
who thought they were doing the "right thing" by draining their "factory fill oil" early, have actually ended up
with delayed piston ring seating and high oil consumption. Just do what the factory Owner's and
Maintenance manual states and you will have a happy and long lived VW !!! VW engineers have their butts on
the line for 100,000 miles and they ain't no fools!
Hope I haven't bored you to tears, but for many this is a very emotional subject and they do NOT want to
be confused by facts or scientific evidence contrary to their beliefs. As an engineer I prefer facts over
opinions...
The 7,500 mile FIRST OIL CHANGE recommendation was to INSURE that people didn't drain the oil early, yet
some still did, and BTW some who report that they did (on the newsgroup) also complained about high oil
consumption as a result. This would obviously serve to substantiate that the VW engineers REALLY do know
of what they speak, and that you should abide by their service mandates, not second guess them.
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