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Hatchbacks Volkswagen Golf Volkswagen TDI Models
2478 messages, Last post on Nov 30, 2009 at 9:34 AM
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Replying to: svargas (Mar 30, 2009 4:04 pm) Using the input from these 2 sensors and other details such as engine RPM, this setup can sense several possible problems *) OilFilter plugging up *) OilPump not providing enogh pressure *) too much oil 'bleeding out' of the main bearings *)...etc I am assuming you are not seeing the light flashing if you just rev the engine in neutral. I am also assuming this happens more when the engine is HOT. (oil thins out when it is hot) I have seen this exact same problem many years ago on my daughters 1st VW gulf. The engine in that car had many hard miles on it and the bearings were getting 'lose'. I was able to keep the engine going for the 2 years that she owned it by adding a can of STP OIL TREATMENT each time I changed the oil. This worked because STP OIL TREATMENT is a viscosity improver (oil thickener) which helps keep the oil-pressure pumped-up when the oil is hot. Also STP OIL TREATMENT contains a big dose of detergents which can clean up the inside of an engine. I did a couple oil/filter changes using STP OIL TREATMENT and the cheapest oil I could find. (about 1000 miles apart). The oil I got out of that engine was black black black. I knew the STP OIL TREATMENT was removing years of gunk. After that, I did one more oil/filter change with quality oil and STP OIL TREATMENT... The engine ran smoother, quieter and the oil-pressure light never came on again during the 2 years my daugher drove that car. You asked for a low-budget solution... I cannot guarantee anything but what I described above is a lot cheaper than tearing the engine apart or replacing it. Also I assume you know that your 1.8t engine REQUIRES synthtic oil. VW/Audi had issues with some 1.8T engines which had NONsythentic oil run in them. The oil would overheat and start to break down leaving goop sticking to the inside of the passagways. (Almost like what cholestoral does to arteries) Good luck... let me know how it works out for you.
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Replying to: bpeebles (Mar 30, 2009 5:26 pm) Hmmm, maybe things have changed over the years, however, STP used to be an absolutely slam-dunk way to sludge up an engine in a very short period of time. The fact is (or was) that all of the detergents in the world couldn't stop the pariffin wax that was a significant reason why STP was such a thick oil (yes, "thick" oil, not oil with viscosity improvers). For my money at least, I I'd rather put tar in an engine than STP. Best regards, Shipo
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Replying to: shipo (Mar 30, 2009 7:10 pm) Let me be clear - do not any oil-treatment on a normal basis and instead use only real GERMAN MADE OIL that VW uses in German built vehicles. HOWEVER: The original appender asked for a LOW BUDGET way to alleveate a problem with oil-pressure sensor alerting when engine under load. My response assumed that they would prefer not to order oil from Germany nor rebuild engine. With a high-milage engine and the other option is to tear-apart engine.... using STP Oil Treatment is a GREAT alternative in my book!
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Replying to: bpeebles (Apr 01, 2009 5:19 am) - ExxonMobile: - - Mobil 1 0W-40 - Valvoline: - - Synpower MST 5W-30 & 5W-40 - - Synpower HST 5W-40 - Pennzoil: - - Platinum European Formula Ultra Full Synthetic 5W-30 - - Platinum European Formula Ultra Diesel Full Synthetic 5W-30 - - Platinum European Formula Full Synthetic 5W-40 - Quaker State: - - Q European Engine Ultra 5W-30 - Castrol - - Syntec 5W-40 - - Syntec 0W-30 Please note that of those listed oils, only the Castrol Syntec 0W-30 is made in Germany. FWIW, the complete list of approved oils can be found here: http://www.audiusa.com/etc/medialib/cms4imp/audi2/aoa/company/aoa-specific.Par.0- - - 023.File.pdf Regarding the OP for this thread; I didn't respond because I didn't feel there was enough information in the post with which to formulate a response. The fact is that unless the OP has used 502.00 oil since very early on in the life of that engine, and changed it at least every 5,000 miles, the engine is probably heavily sludged. If that's the case, then one of the first indicators that the sludge is in there is when the oil pressure light starts blinking. The thing is, the blinking light is typically because the oil pickup screen has become clogged with sludge. If that's the case, then thickening the oil with STP will only hasten the demise of the engine as it will be even more reluctant to make its way through the pickup screen. So, to the OP: The first thing you should check is the oil pressure sensors, however, to do this you'll probably need to take the car to a mechanic familiar with the 1.8T and have him put a mechanical pressure gauge of known accuracy on the engine. If the pressures look good then you probably have a sensor or two that is in failure mode (this is a relatively rare but not unknown problem). If the pressure is genuinely low, the next thing the person on a budget might want to consider is pulling the oil pan (a job I haven't done on your particular car but have heard that it is pretty easy as there aren't too many obstructing components below the engine) and inspect the oil pickup screen. If it's clogged, pull it and either figure out how to clean it with some sort of a solvent, or buy a new one. Long story short, whatever you decide to do, do NOT put STP in your engine. Best regards, Shipo
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Replying to: shipo (Apr 01, 2009 11:46 am) However, the drain period you suggest of 5000 miles is, I believe, merely a device used in the U.S. market to generate income for Service Departments. Same engine, same oil spec here in Europe gets 10000 mile oil changes, (IIRC), as a VW recommendation in the handbook and current editions are 20k. Even the later TDi engines now go for 20k miles between changes - using the correct spec oil. Low-miles between oil changes seems to be a feature of the U.S. market which Europe would never tolerate. My 2004 1.9 TDi 130bhp had an interval of 10k miles and that is now 20k miles on the later ones. My Volvo S60 with the D5 engine runs 18k between changes under full warranty, sames as the petrol-engined variants. The oils and the engines are certainly up to it but the Service Dept doesn't get as much profit. I cannot imagine a 1.8T engine sludging up - using the correct spec oil, anyway. I can't remember when 5k oil changes ceased in Europe; it's so long ago, (except, perhaps, for some very exotic stuff but certainly no "production" cars). I have related elsewhere a local taxi guy running 410k miles in 4 years without any problems other than tyres, a clutch and service items. That was a 1.9 TDi engine running on 10k miles oil changes and the car is still in daily use by his wife. As for STP in modern engines - no thank you. With a TDi engine it might just invalidate the warranty as you have contaminated the original oil spec. Just some thoughts from the U.K.
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Replying to: alltorque (Apr 03, 2009 8:27 am) Best regards, Shipo
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Replying to: shipo (Apr 03, 2009 10:17 am) While this might seem like a small thing, The TDI's "oil use" has been app 8oz per 10,000 miles or app 1/2 qt (16 oz) per 20,000 to 25,000 miles OCI. Incidently the oil used since oem fill and recommended oil change at 5,000 miles, Delvac One 5w40, aka Mobil One Truck & SUV 5w40, aka Mobil One TDT 5w40, does not carry the VW 500.00 series rating. While I would recommended using oils with the VW ( du jour) approved ratings, this oil seems to perform in an almost stellar fashion. For the 2.0 and 1.8T I have heard of consumption up to 1 qt per 1,000 miles (and even less than 1,000 miles !!)
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Replying to: ruking1 (Apr 13, 2009 6:45 am) Best regards, Shipo
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Replying to: shipo (Apr 13, 2009 7:59 am) The "needle in the haystack problems" remains however. So for another example, I could have selected the 2003 TDI with the O1M automatic transmission.......  Perhaps the outcome COULD have been FAR different on the transmission despite a GREAT TDI engine
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The new Touareg TDI has hit the showrooms here in San Diego. The tax credit is only $1150. Better than nothing I guess. I like the looks of the Touareg best of the diesel SUVs on the market. The ML320 CDI is the most comfortable of the bunch. The BMW X5 & GL320 CDI get the biggest tax credit of $1800. The VW comes with leather in the base configuration and should be going for right about $40k before TTL and the tax credit.
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