enthusiast Posted November 8, 2018 Share Posted November 8, 2018 Hi all, had a friend mention to me today that he’s experienced terminal cylinder scoring on TWO Cayennes. Wondering if anyone else has experienced this issue? Jeff Quote Link to comment
malcolm Posted November 8, 2018 Share Posted November 8, 2018 Not on ours, +250k kms and no issues. There are several posts on Rennlist about cylinder scoring, IIRC they were all older models. Quote '21 Macan GTS PDK Miami Blue/Black, 7k kms '93 928 GTS 5 speed Polar Silver/Linen, 192k kms '88 928 S4 A/T Black/Ivory, 190k kms '09 Cayenne GTS Tiptronic Nordic Gold/Black, +336k kms '88 928 S4 A/T Red/Champagne, 110k miles (US car) Link to comment
enthusiast Posted November 8, 2018 Author Share Posted November 8, 2018 That’s a good mileage with no issues. I’ve read the Rennkist posts and learned some newer vehicles had it too but the posts some people put are scary. Some suggest 1 in 5 had the issue but I just can’t see that. Seems like they are excellent vehicles. Quote Link to comment
KMR 968 Turbo Posted November 9, 2018 Share Posted November 9, 2018 (edited) Our 2008 Cayenne Turbo had scored cylinders at 120kms. We only owned it for 4 months when we found out. The new block from Porsche has improved cross hatching. Scoring appears to happen more frequently in cold climates. Another interesting thing is there have been 5 updates to the oil pump and a new style windage tray. Makes one think Porsche is aware of the problem. PS: Where my engine is being built ther was another earlier model Cayenne S with a blown engine. And I have pictures of another first generation turbo with scored cylinders. There is a reason they come up cheap used Edited November 9, 2018 by KMR 968 Turbo Quote Link to comment
enthusiast Posted November 9, 2018 Author Share Posted November 9, 2018 Hmmm - I have an 08 Turbo and my Mom has an 04 S... what was the telltale sign? Knocking? Ticking? No block heaters on these - interesting design to be sure as cold doesn’t seem to be favourable... Quote Link to comment
KMR 968 Turbo Posted November 9, 2018 Share Posted November 9, 2018 My engine started with a light ticking noise. At first it was diagnosed with a possible timing chain tensioner problem. But after the cylinders were inspected it was obvious the walls were scored. The vehicle didn’t use much oil and no smoke out the pipes could be seen. I will find some of the bore pics so you can see what the damage was. Reading online another issue people brought up was the long oil change intervals approved by Porsche. It is recommended to change your oil much more frequently - like every 6000kms - if you live in a cold climate. Quote Link to comment
KMR 968 Turbo Posted November 9, 2018 Share Posted November 9, 2018 Here are the bore pictures, not very pretty. Quote Link to comment
enthusiast Posted November 9, 2018 Author Share Posted November 9, 2018 Yikes, look at that! Quote Link to comment
malcolm Posted November 10, 2018 Share Posted November 10, 2018 with respect to oil changes; Rotella 0W40 and new filter every 10k kms Quote '21 Macan GTS PDK Miami Blue/Black, 7k kms '93 928 GTS 5 speed Polar Silver/Linen, 192k kms '88 928 S4 A/T Black/Ivory, 190k kms '09 Cayenne GTS Tiptronic Nordic Gold/Black, +336k kms '88 928 S4 A/T Red/Champagne, 110k miles (US car) Link to comment
mrdunlop944 Posted November 10, 2018 Share Posted November 10, 2018 What happened to the 5000km oil change intervals? I understand oils are getting better and engines and more efficient but long distance driving, hauling, track days, AutoX, spirited drives, dust conditions, cold weather etc all on the same oil change, no way.. I remember the mobil1/Porsche commercial saying oil changes every 30000km?. This is what you get when you don’t change your oil Mobil/Porsche. Pretty sure I change my oil every 2500-3000km, this is normally due to the age of the oil and not by KM’s, eery 3 months or 5000km for me. Best, Mike Quote 84 944 SOLD 85 944/1 85.5 944 Parts car Sold 86 944 SOLD 86 944 Turbo SOLD 88 944S parts car sold 88 924S Sold 88 944 Turbo S SOLD 89 944 Turbo 90 944S2 coupe Sold 90 944S2 coupe Parts car Sold 90 944S2 Cabrio SOLD Link to comment
malcolm Posted November 10, 2018 Share Posted November 10, 2018 What happened to the 5000km oil change intervals? I understand oils are getting better and engines and more efficient but long distance driving, hauling, track days, AutoX, spirited drives, dust conditions, cold weather etc all on the same oil change, no way.. I remember the mobil1/Porsche commercial saying oil changes every 30000km?. This is what you get when you don’t change your oil Mobil/Porsche. Pretty sure I change my oil every 2500-3000km, this is normally due to the age of the oil and not by KM’s, eery 3 months or 5000km for me. Best, Mike Mike......IIRC the original Cayennes had an oil change interval of 20k kms. Our '09 has the revised interval of 15k kms in the owners manual with recommendation to use Mobil oil. I chose to ignore both recommendations using full synthetic Shell Rotella at 10k kms interval with a new oil filter and have being doing so since we owned the SUV. At +250k kms and counting with no engine issues and no oil consumption at all between changes Id say its working fine Quote '21 Macan GTS PDK Miami Blue/Black, 7k kms '93 928 GTS 5 speed Polar Silver/Linen, 192k kms '88 928 S4 A/T Black/Ivory, 190k kms '09 Cayenne GTS Tiptronic Nordic Gold/Black, +336k kms '88 928 S4 A/T Red/Champagne, 110k miles (US car) Link to comment
jddarkside Posted November 20, 2018 Share Posted November 20, 2018 Neighbour had an ‘08 Turbo, started to make a funny ticking sound so he sold it immediately. Sounds like the same issue. Quote Link to comment
ErikA Posted November 20, 2018 Share Posted November 20, 2018 What happened to the 5000km oil change intervals? I understand oils are getting better and engines and more efficient but long distance driving, hauling, track days, AutoX, spirited drives, dust conditions, cold weather etc all on the same oil change, no way.. I remember the mobil1/Porsche commercial saying oil changes every 30000km?. This is what you get when you don’t change your oil Mobil/Porsche. Pretty sure I change my oil every 2500-3000km, this is normally due to the age of the oil and not by KM’s, eery 3 months or 5000km for me. Best, Mike Definitely. You cannot change your oil too often. I think Range Rover was peddling the same nonsense but happily the one I bought had documented oil changes every 10,000 km. I'm sticking to an 8,000 km interval in that car from now on. Quote Erik 2001 911 Turbo X50 1980 911SC - Black, 3.2 litre short stroke SOLD! 2002 BMW M3 - Carbon Black over Cinnamon Link to comment
Perci Posted May 11, 2019 Share Posted May 11, 2019 Jake Raby has done videos on bore scoring that are interesting. He doesn’t have a definitive conclusion as to the cause, and occurs in other makes as well. Best answer is Nicasil cylinder liners. Quote Perci PCA DE Instructor 2014 Cayman S 2000 Boxster S 2000 Carrera 2010 Panamera 4S 1989 928GT Link to comment
Keith Adams Posted May 13, 2019 Share Posted May 13, 2019 Definitely. You cannot change your oil too often. I think Range Rover was peddling the same nonsense but happily the one I bought had documented oil changes every 10,000 km. I'm sticking to an 8,000 km interval in that car from now on. I'm sticking to that with my Cayenne TT as well - I figure a couple of jugs of oil and a filter are cheap insurance. Quote Link to comment
9Elfer Posted June 3, 2019 Share Posted June 3, 2019 Hello Gents, My 2cents...... Was bore scoring ever an issue with older cars? One theory (Jake Raby) out there is that it is due to fuel dilution, especially with direct fuel injection engines. Leaky or poor performing fuel injectors, combined with long engine oil drain intervals can lead to problems? He suggests adding an injector cleaner to the gas occasionally. Marc Quote Link to comment
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