How To Tell Oil That Was Used?

[valanahara]

Hey guys... Maybe a noobie question here but need some help..

I recently bought an 01 tahoe with 141,000 miles on it. It has been a one owner for the last 13 years and most of the service records are available throughout the entire life of the rig on carfax... I bought it from a dealership though not a private seller. How do I know what engine oil they used? If they used regular oil over the past 141,000 miles I don't want to switch to synthetic (don't want to argue about this, I just don't want to switch to a thinner oil after so many miles). The carfax doesn't help other than it shows the changes... What would be my best bet in figuring this out? I suppose if they used full synthetic the past 141k miles reg wouldn't hurt? Don't really want to send it off to some "lab" either if I don't have to. lol.

- Vala

 

[valanahara]

Really? Nothing? Wow.

 

[95escahoe]

Do the service records say where it was serviced?

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[valanahara]

Do the service records say where it was serviced?

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It does... I was't sure if it would be of any help though?

 

[NathanJax]

The only way to tell is to change your oil yourself.


You can take a sample of your oil and and it off to be analyzed if it really means that much to you though...

 

[992dr]

Like Nathan said, change your own oil.
Start fresh with your own service records and use whatever oil is recommended by the factory.

 

[95escahoe]

It does... I was't sure if it would be of any help though?

Call up where it was done if it was always brought there they might know what they used

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