I agree I use excel but it doesn’t prove anything especially when the mfg wants to find a reason to deny. But other than 4 oil changes, my wife’s purchased new 2011 Enclave has had all the oil changed by me. I have found GMC service to be subpar so I am drawing a line in the sand, taking a stand, and getting my point across to GM by my planning to buy a 2025-26 Chevy Tahoe High Country. Yes I need a spine. I really hope our future L87 has no DFM issuesThe short answer is that there is nothing you can do to truly prove oil changes were done; you are not a business and they can always find reasons to doubt your recordkeeping.
But I use an Excel spreadsheet and keep receipts, and cross my fingers.
A 400 mile oil change .... Well alrighty then . Saved the oil in a jug ? WTFO ?I just finished (15 min ago)my first oil change 400 miles on my 24 caddy v6 and took pictures and saved the first gallon in a clean container.I used 5 of 6-5-30 amsoil View attachment 224580and a qt bottle of Lucas synthetic oil,the filter was a royal purple. I will save the receipts and pics hopefully it never sees the dealer.There is so many drain plugs underneath it. I jacked up the front to get it drained but everything is super accessible.I use the considerable section in the owners manual to record everything.
If you don’t understand look at the definition of a break in oil change on a new engine broke in properly.A 400 mile oil change .... Well alrighty then . Saved the oil in a jug ? WTFO ?
Who wrote this " definition " ?If you don’t understand look at the definition of a break in oil change on a new engine broke in properly.
The guy that builds all my LS engines,he uses terms like heat cycles,seating rings and other automotive stuff but do it your way and I’ll keep buying new to avoid the 9999 mi.oil change people.Who wrote this " definition " ?
Huh ?I’ll keep buying new to avoid the 9999 mi.oil change people