Do I need an oil change?

[RJay]

hello guys, I just purchased 2017 gt350 with 853 miles, now got 950 miles driving back home. oil life shows 41% and wondering if its necessary for a change. Thanks!

As others have said, definitely change it.

For the oil life to be at 41% with only 950 miles, some wonky things have been going on. Extended idling? Very high RPM operation? Maybe it was never reset to 100% life in the first place? Too many unknowns here...

It's been almost 2000 miles since my oil change and my OLM is at 75%.

Make sure, whether you do it yourself or have it done, that you verify the OLM has been set to 100% after the oil & filter change.

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[JAJ]

...For the oil life to be at 41% with only 950 miles, some wonky things have been going on...

The oil life monitor on the Mustang (most Fords, actually) counts down from 100 to 0 over a one-year period. A reading of 41 percent will happen in a little over seven months after the last oil change even if it's not driven at all. The oil in the OP's car could be brand new - it's just there's no way to know.

 

[RJay]

The oil life monitor on the Mustang (most Fords, actually) counts down from 100 to 0 over a one-year period. A reading of 41 percent will happen in a little over seven months after the last oil change even if it's not driven at all. The oil in the OP's car could be brand new - it's just there's no way to know.

I drive my Fords, so my countdowns are based on use, not time. But that's interesting to know. Also why I suggested that the OP change the oil because of the unknowns.

The OLM on my '14 GT was exactly 1% oil life deduction for every 100 miles of travel - like clockwork.

The GT350 seems to be a little more aggressive with 2,000 miles deducting 25% of the oil life - but that's close to what the manual calls for with "Normal" use (5,000 to 7,500 miles between oil changes).

 

[Alain]

dude, it's not even a question, change the oil for peace of mind.

 

[JAJ]

I drive my Fords, so my countdowns are based on use, not time. But that's interesting to know. Also why I suggested that the OP change the oil because of the unknowns.

The OLM on my '14 GT was exactly 1% oil life deduction for every 100 miles of travel - like clockwork.

The GT350 seems to be a little more aggressive with 2,000 miles deducting 25% of the oil life - but that's close to what the manual calls for with "Normal" use (5,000 to 7,500 miles between oil changes).

You're right, of course - it does go down from use as well as down from time. I was only thinking of the low mileage on this car, where it's likely that the 41% count was the passage of time. If you drive your car enough, it'll go down from usage as well as or instead of time - and it goes down faster the harder you use it. For the first time in ages I ran my GT350 enough this year to get it down from use and not just from time - I changed the oil at 11% after 6500 miles.

 

[lightrules]

anyone ever heard of this brand? any idea if it's as good as amsoil?

 

[Alain]

Liqui Moly is big in the European car scene. It's used by the big name brands like BMW, MB and Audi. In my experience it always has had a good rep.

 

[lightrules]

unless it's highly recommended around here i'll pass. probably sticking with MC for now then. thanks alain.

 

[joshua80]

Liqui Moly is big in the European car scene. It's used by the big name brands like BMW, MB and Audi. In my experience it always has had a good rep.

Use it in my 2017 Golf R. Good stuff with a good rep in the Euro's, like you said. Motul is another big one.

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