Blackstone Results
I have been taking samples of oil for Blackstone for a number of years. This is the last sample and I am asking for opinions. Almost 3800+ miles towing on this change. Using Shell Rotella T 15W4...
Forum Discussion
Why so many hand written numbers on the report?
Looks like you have had high numbers on that Dmax since the beginning. What has Blackstone stated in previous reports?
I think I would take the last several reports to your dealer, and ask why.
One other question, if using synthetic oil why change so often?
Looks like you have had high numbers on that Dmax since the beginning. What has Blackstone stated in previous reports?
I think I would take the last several reports to your dealer, and ask why.
One other question, if using synthetic oil why change so often?
