Hello,
It's been a while since I posted a UOA for my '03 Audi A4 1.8t, but here it is. Your thoughts/comments/opinions.... all very much appreciated. And if you have questions, or need more info, let me know.
To view the PDF, click here; Blackstone Labs UOA #4
History/Info:
Cars been running pretty much flawlessly and has just over 52K miles now. This OCI went a little longer then expected (usually 10-12K avg.). All previous UOA's were showing good results overall for both oil and engine. However, with this last OC and UOA it seems some concerns have come up with certain element findings. Also, as noted by Blackstone Labs, there was a Coil Pack failure in the #1 cylinder just before the belated service at 47,668 miles (actually the reason I took it in). I was only about 5 miles away from the dealer when it happened, driving as easy as I could. With regards to the Air Filter, this was last changed at the 20K service. I'll change that soon.
Driving is about 80/20 (Freeway/City) in SoCal. I drive pretty consistant speeds on the freeway, but do push it as well (high RPM's, speeds,..etc). I don't pamper it, let's put it that way. No engine mods except for NGK copper plugs (which I change every 5-8K miles) and a Canton/Mecca Performance Spin-On Filter. I had their 4" filter for this period (which I've been using for 8 years on VW/Audi 1.8t's and averaging 10-12K miles with changes), but recently switched to their new 6.25" size to match the larger OEM filter Audi introduced due to oil sludge issues and such a small oil capacity; 3.7 qts, now 4.2 qts.
With this OCI at 47,668 (actually the 40K service) I just had the dealer use their own oil, OEM filter and plugs, since my 50K service was so close and I didn't want to waste my stuff on it. Plus it would act as a cleaning stage (I've used Motul Engine Clean before). So at the 50K service, I had the dealer switch back to the Motul 8100 E-tech 0W-40, use the CM 6.25" Performance Filter and put in NGK coppers. Car felt great! And depending on your feedback here, I may only run 10K for the next OCI, and/or do a mid-way oil sample UOA to see how the #'s look.
Note: Had I received this last UOA from Blackstone Labs sooner (before my 50K service), I would have had a UOA done with the dealer oil to see how those numbers were afterwards and if it was the CP failure,..etc., that made certain element readings jump.
TBN for this oil and mileage doesn't seem to be any worse then the others with less mileage. You can view them, and comments by Blackstone Labs, here as PDF's in descending order;
UOA #3
UOA #2
UOA #1
#3 was Motul 300V Power 5W-40 (before Double Ester). #2 was Red Line 5W-40. And #1 was Red Line 5W-30 From deliery to 10K service was factory fill (most likely Castrol Syntech 0W-30). I didn't get a UOA done unfortunately.
My browser wouldn't let me preview the post, so I hope it's ok.
Thanks.
[ August 05, 2005, 04:37 PM: Message edited by: A4NCAR ]
It's been a while since I posted a UOA for my '03 Audi A4 1.8t, but here it is. Your thoughts/comments/opinions.... all very much appreciated. And if you have questions, or need more info, let me know.
To view the PDF, click here; Blackstone Labs UOA #4
History/Info:
Cars been running pretty much flawlessly and has just over 52K miles now. This OCI went a little longer then expected (usually 10-12K avg.). All previous UOA's were showing good results overall for both oil and engine. However, with this last OC and UOA it seems some concerns have come up with certain element findings. Also, as noted by Blackstone Labs, there was a Coil Pack failure in the #1 cylinder just before the belated service at 47,668 miles (actually the reason I took it in). I was only about 5 miles away from the dealer when it happened, driving as easy as I could. With regards to the Air Filter, this was last changed at the 20K service. I'll change that soon.
Driving is about 80/20 (Freeway/City) in SoCal. I drive pretty consistant speeds on the freeway, but do push it as well (high RPM's, speeds,..etc). I don't pamper it, let's put it that way. No engine mods except for NGK copper plugs (which I change every 5-8K miles) and a Canton/Mecca Performance Spin-On Filter. I had their 4" filter for this period (which I've been using for 8 years on VW/Audi 1.8t's and averaging 10-12K miles with changes), but recently switched to their new 6.25" size to match the larger OEM filter Audi introduced due to oil sludge issues and such a small oil capacity; 3.7 qts, now 4.2 qts.
With this OCI at 47,668 (actually the 40K service) I just had the dealer use their own oil, OEM filter and plugs, since my 50K service was so close and I didn't want to waste my stuff on it. Plus it would act as a cleaning stage (I've used Motul Engine Clean before). So at the 50K service, I had the dealer switch back to the Motul 8100 E-tech 0W-40, use the CM 6.25" Performance Filter and put in NGK coppers. Car felt great! And depending on your feedback here, I may only run 10K for the next OCI, and/or do a mid-way oil sample UOA to see how the #'s look.
Note: Had I received this last UOA from Blackstone Labs sooner (before my 50K service), I would have had a UOA done with the dealer oil to see how those numbers were afterwards and if it was the CP failure,..etc., that made certain element readings jump.
TBN for this oil and mileage doesn't seem to be any worse then the others with less mileage. You can view them, and comments by Blackstone Labs, here as PDF's in descending order;
UOA #3
UOA #2
UOA #1
#3 was Motul 300V Power 5W-40 (before Double Ester). #2 was Red Line 5W-40. And #1 was Red Line 5W-30 From deliery to 10K service was factory fill (most likely Castrol Syntech 0W-30). I didn't get a UOA done unfortunately.
My browser wouldn't let me preview the post, so I hope it's ok.
Thanks.
[ August 05, 2005, 04:37 PM: Message edited by: A4NCAR ]
