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Lessmore's avatar
Lessmore
Explorer II
Mar 12, 2015

New vehicle engine oil- first oil change recommendations

I have a new vehicle. It's a 2015 Impala LT with the LT2 option...the 305 hp, 3.6 liter V6.

Eventually I plan to use it for light towing...my Old Town freighter canoe....which along with the light boat trailer, weighs less than 500 lbs, much less then the maximum towing capacity of 1000 lbs. Bit I'm not looking at towing for a number of months, yet.

Right now I've got about 500 + miles on it and I've followed the GM break in recommendations. No hard starts, keep the engine revs moderate, vary the engine rpm.

However when it comes to oil, I've always made sure my first oil change was at 500 miles. The idea was to clean out any swarf that may develop as a result of the break in process.

But I know engine routines are different now, so is oil. In fact my Impala has a synthetic blend oil.

I can't find anything in the owner's manual about changing oil within the first 500 miles or so.

What it does say is that the car has a computer system that tells when to change the engine oil. This could be quite a number of miles ....possibly 7500 miles or more.

This bothers me as I've driven vehicles since 1965 and I've always changed my initial oil in a new vehicle at 500 miles or so.

What do you think and what would you're recommendation be and why ?
  • Depends on how long you plan on keeping it.

    If going to sell/trade it in a few years...go with the OEM recommendation

    If going to keep it a looooong time, then what I do is change it at 500
    miles not matter what. Ditto tranny, ditto Diff

    Yes, old timer stuff and still believe in it...even with the new IP
    in them these days

    I do switch over to synthetics at that time and add my molyB additive
    in all, except an automatic tranny or diff with clutches


    For used, I do that first chance and usually within the first days
    or week of ownership
  • Engine blocks go through washers the size of your house at least four times before assembly.
    Bores are honed in stages at a fraction of the pressure they did 'back in the day'.The honing process has been switched over to diamond tooling since the late '80s,the final stage of which is a 'diamond brush ' ,that cleans and removes all the swarf from the bores.
    The low forces used in cross hatching the bores result in a 'roundness ' measured in millionths.Rings are very low in tension and do not remove any material from the bore ,they are seated from day one.
    But go ahead and change the oil ,it is after all from the lowest bidder.