Hello, I had oil change on my car and I noticed that they put 10w40 instead of 5w30. The car had been using 5w30 all the time so I do not understand their decision to put 10w40. I looked up and 10w40 is supposed to be a thicker oil.

I have Skoda Superb 2007 with 2.0 TDI PD engine and 310 000 km on it. An old diesel engine design. I suppose that it will not do any harm since is an old engine design but I might be wrong.

What should I do? Leave it be or get the oil drained?

Comments (7)
No. 1-2
dil 89
dil 89

It's fine if the engine has lots of time on it

Techsus
Techsus

I'd make them re-do it w/ correct grade. However, on a larger scale, this is yet another endorsement for changing your own oil. You've proved you have no control, really, on what grade or quality oil they install, ''if" they change the filter-- and even "IF" they actually change the oil... or pretend they do. Many YouTUBE videos on oil-change scams in various iterations and themes. DIY your own oil changes where feasible.