I just received my Blackstone kit and was wondering the best way it was to ship the sample back. I heard that USPS doesn't like it when you are shipping fluids/oils and would delay the shipping, and that some threw the sample bottle into a box. How much would it cost to ship it back?
Is the TBN worth adding for an extra $10? My goal right now is to do a sample on my EcoBoost 3.5L on a lease. I have to make a decision on whether to buy out my lease or turn it in, and this would be the last oil change before the lease is up in a few months. I figure it would be a good time to check on the condition of the engine and see if my oil change interval was good enough.
Is the TBN worth adding for an extra $10? My goal right now is to do a sample on my EcoBoost 3.5L on a lease. I have to make a decision on whether to buy out my lease or turn it in, and this would be the last oil change before the lease is up in a few months. I figure it would be a good time to check on the condition of the engine and see if my oil change interval was good enough.