If you're using synthetic oil and a good quality filter you don't need to be changing as often as the computer thinks you do. The computer is planning things based on standard dino oil.

Rob

 

Run it 6k then. You can also change oil based on engine hours. Its in the Evic.

 

For the longest time I have changed my oil every 3 thousand miles with synthetic.But man,these $100-$120 oil changes every 3 months is starting to annoy me.I can't seem to let it go 5 thousand miles between changes.I have been thinking,our trucks have the lifetime powertrain warranty,right!Why use synthetic all the time,when conventional will do just fine if the engine is covered anyway.Lets see here,$480 a year,or $160 a year.Is synthetic really worth using over conventional.I could see the difference,or circumstances to using synthetic if there is no lifetime powertrain offered..What thoughts do you others have?

 

Why were you changing out synthetic or any oil for that matter every 3000 miles?

 

How do you end up spending that much on oil changes?? Mobil 1 is $18-25 per 5 quarts (depending on sale price at WalMart) and a $10 filter for a quality one. If you're having someone else do the work, well, that's another issue.

Rob

 

Change mine every 6-7k, been doing it on all of my vehicles without an issue. I drive a lot of highway miles. Changing it every 3k is a bit severe unless you're driving the majority of your miles in the city.

 

Yep, I agree.

But the ONLY way to really know when you should be changing your oil is by sending it out for an analysis. I've done it twice, once with the truck running Valvoline 100% synthetic 5w-30 ('04 specs that instead of 5w-20) with a Purolator Pure 1 filter, sent out at 5000 miles and the report came back that the oil was still well within spec and should be tested again in 1500 miles. Based off that, I standardized on 5k changes.
On my Grand Cherokee I sent it in with 5000 miles on Royal Purple 10w-30 (HO version of 4.7L V8) and K&N filter and it came back that the oil was still well within spec and should be tested again in 2500 miles. Dunno why the additional 1000 miles before next test? Maybe the RP held its properties a bit better than the Valvoline? Although I had the truck up at the farm while this oil was in it and 75% of the roads are dusty, red clay dirt up there, so that could have been a factor. Also when I'm up there I'll tow a bit.
But regardless, I've settled in on 5000 mile changes knowing the oil is still WELL within specs at that time.

I'd be interested to see how a dino (conventional) oil compared, but I haven't run conventional oil in probably 20 years or more...

 

Ridem,

I agree with the other posters on here. Unless your driving under severe conditions such as dusty roads or frequent towing there is no need to change your oil every 3,000 miles.

 

Every 7,500 miles in the Acura, with M1. Got the truck with 14.5K on it, oil msg. came on at 18K, have no clue at what mileage it was changed, but will be every 5K from here on with M1 in the summer while towing and every 6-7K in the winter.

 

I would go longer in the summer, not winter due to condensation that can build up from short drives, etc when cold. But then, it depends on where you live and if the truck will get run long enough to boil out the condensation.
Just my way of thinking.