oil change... time vs mileage

Gotcha, the Slick 50 was probably late 80s or early 90s IIRC

 

https://www.youtube.com/watch?v=w4UtqglOubk

 

I was checking Mobil 1 prices at Rural King yesterday and they had the "truck & suv" brand on sale. I've only used the original and am at 210K now.
Has anyone used the truck & suv, or is it the same formualtion, different sticker?

 

Interesting, I thought my guess was close but in the commercial there it said something about 1979.

 

I change my oil the first week of any month that begins with the letter "A".

 

Yes but do you also pre-fill the filter with oil before installing it?

 

Absolutely not. Pre-filling the oil filter runs the risk of induced non-laminar cavitation in the oil pump inlet.

 

I had that problem too until I switched to 65w-90 Amsoil with anti-cavitation additive. Only $17.95 per quart with a coupon

 

If you change it so much, then you wear out the dip stick and could cross the threads on the filter or the pan.

 

I change when its dark brown to blackies.

 

Don't know about the dip stick wearing out lol. As far as cross threading never had a issue... allways thread on by hand and just snug up the drain bolt/gasket (never use a torque wrench on it) & hand tight on the filter... going on 18 years and haven't dripped a drop yet. Awaiting the Blackstone results... plan on going from 1,000 mile changes to once a year.

 

every 5k. Once a year. Maybe twice. Depends on location.

In places without weather, maybe once a year.
In places with weather, some people change it every season.

Use might not matter. A tow trip or not, the thing is not being launched at a drag strip.

 

Yeah, it’s mostly marketing. The “Truck/SUV” oils just test a little higher on things like detergents, anti-wear, dispersants, that kind of stuff. Basically a touch more heavy-duty, but nothing magic. As long as you’re running the right weight from a decent brand, your motor’s not gonna know the difference.