Whiplash Willy
New member
You have the right to insist that they use the oil spec'd in your OM.
If they can't prove to your satisfaction that they are using a quality bulk 0w20 then I would insist that they allow you to watch them put in bottled TGMO or get your money back. I would even agree to pay a little more if necessary.
I wouldn't get crazy about it and insist on new filter or anything, just a drain and fill.
Switching between synth and non-synth is not the issue that people used to think it was.
IIRC. The wear numbers being reported with 0W20 are now worse than "heavier" weight oils.
I would not use a 30wt oil in this engine unless I was really pushing it in offroad or racing situations AND having oil pressure issues.
YMMV (literally).
TGMO is now made by Mobil to Toyota specs but has been made by other mfgs in other markets.
It is NOT Mobil 1.
I have always worried how the thinner oils protect our engine compared to the standard weights, but I heard great things about the TGMO. If you have any good links to share about 0w-20 wear rates, I would like to see them.
For my first OCI I used TGMO 0w-20, because I really didn't want to think about it, I am still debating on what I should use for my 20k OCI.
It is stories like the OPs, that make me bypass those free oil changes, and never take it to a dealer or lube shop to change the oil. There is no way I would let a minimum wage Lube Tech touch my $35k vehicle.