Search results

UOA of 10W40 https://bobistheoilguy.com/forums/ubbthreads.php/topics/3601592/Purol_Synthetic_10w40_-_2.5L_T

Thank you now I understand. Don R

Thanks for the response. I'm not versed enough with motor oil engineering terms, etc...etc...but should be suggested for my application and why would the oil cause hi-temp deposits? What indicates that it has sheared to a 40w? Thanks, Don R

Hi gents, this post is a follow up on my last oil report linked here. I'm pleased with the results given that my car is a highly modified one pushing 350whp daily driven miles. I think from now on this will be my preferred choice of motor oil. Don R

I bent the rod from the test run after isntalling the turbo upgrade and made it back to the shop to tear down the motor for upgraded internals.

Hi gents, this is my 1st time posting but I've been an avid reader of these forums for a while now and I appreciate your input. Looking at the oil report I can understand where the wear numbers are a bit above uni averages from having this sample taken on oil used in the severe cold winter...

I think that's a good idea...Going to look into a block heater this coming winter

True, I also use the bigger OEM VW/Audi filter. Perhaps the dual ball bearing system of my turbo can also attribute to some of the higher metal contents.

I completely agree with you, but I guess at the time I was more interested in warmth and comfort to get in and go when departing for work or home in -15°C to -20°C temps. A little neglagence to say the least on my part but after reviewing the results I'm going to refrain from doing the same next...

To be honest with you...since reading your thread on Castrol 5W-50 and saw how clean your motor was in the pics I decided to try it The oil that I used previous to this interval was Castrol Syntec 5W-40 (made in Belgium) but unfortunately did not get the chance to send it in for anlysis.

I bent rod #1 with a 30 psi spike on a GT2871R causing the stock piston skirt to kiss the oil squirter...the next day I decided to rebuild with stock 81mm Wisesco pistons with Pauter rods.

Patman, thanks for the reponse. Interesting you say that 5W-50 would've shown much higher wear. The '5w' designation should be adaquate for the colder temps is it not? I expected my internals to be worn in (broken in) by 18 500 miles.