Best oil for 100K + engines?

[Splatmaster527]

I use Fran filters there a ***** to get off since they added grip tape to them the socket gets suck but I learned before taking them off punch a whole in them and let them leak out first!!!

Its not like you need to save it... Get a pair of channel lock pliers and twist it of... 10 second job

 

[Freedom Motorsports]

As long as they do not already leak and do not have issues, running synthetic of any kind is best. The number one thing to consider when choosing which oil to run is how you want to maintain your vehicle and your budget. Paying close attention to the recommended drain/change intervals from the manufacturer of the oil you are considering, stick to their recommended intervals or less. Some companies offer longer service intervals than others. Those that offer the longest service intervals will save folks more money over time if they change their oil according to the recommended intervals.

For example, Amsoil Signature Series 5w-30 has a service interval of 25K miles or one year whichever comes first. Most people don't drive that much, the national average is around 13-15K per year so you would be changing your oil once a year.

No matter what you choose to use, make sure to stick to the recommend intervals or less and you will be just fine.

 

[ktmhans]

So no go on the 10-30 mobil? Thinking it might quiet down the lifters

 

[lawjack]

I've got 250k on my denali and i've been running Rotella 15w-40 in her for awhile now

 

[MeanieNJ]

I've got 250k on my denali and i've been running Rotella 15w-40 in her for awhile now

did u switch to that because u were burning thinner oil?

And to answer the question... Engines are made to run with just oil so unless Im burning oil or for some reason feel I need an additive like Lucas or something I dont do it. I just use whatever name brand is on sale conventional oil. No high mileage or anything because to me its a gimmick. If you keep up with your oil changes your engine will last forever on the cheapest oil you can find. Never have I seen or heard of an old engine failing because someone should have ran "high mileage" oil instead of normal oil. The only thing I would have done had I bought my truck new was switched to full synthetic after the break in period. Too late for that now though.

 

[lawjack]

Naw, I used it because its what my dads boss ran in all his fleet trucks, and he always let me use the extra for free, so it was free, and i figured why not haha

 

[MeanieNJ]

Cant beat free lol. Kinda thick for cold starts but other then that its good stuff.

 

[DefendHawaii]

I've got 250k on my denali and i've been running Rotella 15w-40 in her for awhile now

Is that working well? I just got my Burb and am at 244K and am running some just Mobil 1 regular 10w-40.

I am looking to upgrade and was going to use synthetic but not sure on jumping from one to the other.

 

[Freedom Motorsports]

While it is true, it is hard to beat free, Rotella 15-40 is a diesel oil. It is formulated specifically for diesel engines and will not provide the best protection for a gas engine. It is also harder on the oil pump, etc because it is such a heavier weight viscosity.

 

[01HDtahoeNJN]

Its not like you need to save it... Get a pair of channel lock pliers and twist it of... 10 second job

Yes but it's I don't like making messes if you punch a whole in the filter to control the oil and let it leak out