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Maintenance & Repair Oil change/fiascos
1297 messages, Last post on Sep 07, 2009 at 9:29 AM
You are in the Maintenance & Repair Forum. Your Host is mr_shiftright
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Replying to: corsicachevy (Jan 24, 2005 4:48 am) |
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Replying to: bjbird2 (Jan 24, 2005 10:22 am) |
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I would steer clear of the aftermarket oil filters (Fram, Purolator, etc). I use the factory MANN oil filters for my VWs because besides being a very effective filter, they also contain a check valve which aids in regulating the engine's oil pressure and prevents dirty oil from "backflowing" into the engine after it is turned off. The majority of aftermarket filters do not have this feature. I learned my lesson after years of using the aftermarket filters. This is definitely one situation where "you get what you pay for"...
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Replying to: 600kgolfgt (Jan 29, 2005 5:53 pm)
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Replying to: imidazol97 (Jan 29, 2005 5:55 pm) =================================================================- ===== Date: Mon, 27 Jan 92 12:51:39 EST From: wiegman  orion (Herman L. N. Wiegman) To: volvo-net me.rochester.edu Subject: Re: oil filters and Techtron Eric, Dave and the net, [important thread for all Volvo owners] >Volvo recently downsized their oil filters again...it is now about half the size it was just a few years ago. > On my '84 240 with B230 engine, there is plenty of room for the larger filter, so I figure I might as well get all the filtering I can. This was a mistery to me too, but Hudson Valley Volvo Club enlightened me and many others with their oil filter display. The now smaller Volvo filter has MORE filtering folds in it with FINER tolerances and BETTER filtering capability. WOW! I was impressed. The price did not get smaller though... The worst oil filter was the FRAM unit. The BEST ones were the MANN oil filter (the original manufacturer for the '82-'89 Volvo oil filter), the OEM (original equipment from the manufacture) filter, the AC Purilator and the ipd unit. There were lots of mediocre filters and a few pitiful ones. I can summarize to those who are interested. > Once again, regular oil changes are far more important than the oil or filter types that are used. The Fram unit did not even have a oil pressure check valve in it! The oil pressure would drop to ZERO every time the car is turned off. Normally the pressure stays up, or at least, the oil stays in the filter for shorter start-up lubrication lag times. Personally I use the ipd filters. Why? Because I bought a case of them on sale. I'll probably use either the OEM or Mann units in the future. =================================================================- ======= At the time I used the aftermarket filters in my 1987 Golf GT, Most of them did not have the anti-drainback valves. I understand that the aftermarket filters are now incorporating this feature, but a lot of them still have filter elements that have the durability of a potato chip. As a former mechanic, I now use only the factory filters for the specific make of vehicle. Everyone else can use what they want, but for me, anything else is a shortcut IMHO. |
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Replying to: 600kgolfgt (Jan 29, 2005 6:02 pm) The oil pressure always drops to zero any time an engine is turned off...? The oil pump stops turning and the filter media allows the oil to exit toward the engine if it's under any pressure. Antidrainback valves are to keep the oil from leaving the line due to gravity. As I understand that's needed on a few motors that lose a lot of volume from a line when off for a period of time. Then the startup is like having a new filter where the first little bit of pumping is refilling the line before oil gets pumped to the engine parts. I can't tell from any evidence in the citation if antidrainback valve is needed in this engine or not. Most talk was anecdotal. The whole question and discussion there sounds like a 30 minute commercial on late-nite cable criticizing the competition's mouse-milk product to tout their own. Does anyone have more data on drain-back valves? And where they're needed? And which filters actually don't have them on the model for the cars that do need them, an important question.
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Replying to: imidazol97 (Jan 30, 2005 3:20 am) http://www.oilfilterstudy.com/ |
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Replying to: imidazol97 (Jan 30, 2005 3:20 am) Volkswagen 034 115 561A This filter has the same construction as the American-made Bosch filter (Champion Labs), and also appears to have the same filter element. Average Retail Price $8 Cartridge Length 3.950 inches Cartridge Outside Diameter 2.700 inches Cartridge Inside Diameter 1.375 inches Cartridge Pleats 75 Cartridge End Cap Type Stamped steel Anti-Drainback Valve Type Spring loaded steel, nitrile seal Bypass Valve Type Nitrile rubber diaphragm Element Type Paper media, glued seam Element Length 73 inches Element Width 3.750 inches Element Surface Area 274.0 square inches Shell Thickness 0.014 inches Backplate Thickness 0.118 inches Gasket Type Nitrile rubber Mann W719/5 This filter also has similarities to both the Champion Labs and the Mahle units. It has the usual Champion Labs bypass and anti-drainback valve locations and construction, but has a filter element similar to the Mahle unit. The inside diameter of this cartridge is smaller than the Champion Labs or Mahle, which allows deeper pleats and gives this filter the most surface area of the group (285sq-in). The cartridge spacer is a leaf spring-type, but of a unique design. The backplate looks just like the Champion Labs backplate, except that for some reason is it not welded or glued to the can. The can has some "hooks" that attach it to the backplate through the "D"-shaped inlet holes. After looking at it, I realized that this makes no difference in terms of sealing. The outside seal is made to the filter can and so any oil that gets between the backplate and the can ends up in the same place that it would if it went through the inlet holes. Also, this filter has the strongest can of the group. This filter has "Made in Germany" stamped on the can, which may account for the differences from the American-made Bosch filter (which is manufactured by Champion Laboratories). Average Retail Price $? Cartridge Length 3.875 inches Cartridge Outside Diameter 2.700 inches Cartridge Inside Diameter 1.375 inches Cartridge Pleats 59 Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge) Bypass Valve Type Spring loaded steel, nitrile seal (top of cartridge) Element Type Paper media, glued seam Element Length 76 inches Element Width 3.750 inches Element Surface Area 285.0 square inches Shell Thickness 0.021 inches Backplate Thickness 0.117 inches Gasket Type Nitrile rubber
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Don't overlook the fact that many/most oil filters that carry a motor vehicle brand name on them are manufactured by one or more of the companies such as Champion Labs, Wix Corp., etc. You can very often get the very same filter under another label for less money.
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Replying to: wtd44 (Jan 30, 2005 10:21 am) To me, this is a situation where you get what you pay for. |
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