I am going to convert my trucks to synthetic oils. What mileage interval do
synthetic oil users here use?
One truck is brand new with almost 1000 miles (an '04 ZR2 Blazer, the other
a recently acquired 2001 Silverado 4x4 with a 4.8 and a 5 speed with 50000
Presently the '01 is running Valvoline Durablend, and I was thinking of
using Valvoline synthetics.
Every 3000? 5000? More?
I changed mine at 3000 the first few times to make sure I got all the
non-synthetic out (but I had 36k when I got the truck), then extended to
6k, so I do my oil change, chassis grease, filter and tire rotation all at
I change mine at 3,000 miles as it still gets as dirty as convectional oils
and also collects moisture from condensation as the motor cools off. As well
as normal contaminates that an internal combustion engine sees.
I use Mobile 1 strictly for the added protection as it won't break down as
easily as conventional oils.
At least someone else in here is as old fashioned as I am when it comes to
oil change intervals, regardless of using synthetic. I too change my oil
and filter every 3K and use Mobil 1 exclusively. Shit, I even run M1 in my
tractor! Starts a helluva lot easier in the winter months for plowing snow
with the synthetic in there.
Not with me - I've used nothing but Fram filters & have over 1/2 million
miles total on 2 engines/trucks alone. Many other vehicles too, not one
with a lubrication/filter issue. So many people complain about the Fram
filter, I must be the only human in the universe to have good results
Most people luckily don't have a failure, but your chances of having a
failure with a fram are higher than other brands so its a gamble. I didn't
have a problem until one day I smelled gas and found a leaky filter, the
fram started to leak at a weld seam and could have been dangerous had I not
caught it. Its your life, if you choose to live dangerously and use fram
go ahead. I thought that if was just a fluke thing and any brand could
have a failure and even kept using fram until i got on the internet and
found that fram has more failures than others, at that point I stopped
using them, my life is worth more to me that the price difference to buy a
better brand filter.
You smelled gas from a leaky OIL filter?!? WOW, that IS dangerous! We
are talking about oil filters right now guy. Where are the actual MTBF
numbers for all oil filters - I truly would like to see this info. I'm
not brand loyal - I'll use the best proven product around & for me it
has been Fram for 20+ years. You had a bad experience so Fram is junk
for you - one person's bad experience means everyone is "living
dangerously"? Get serious.
Try reading my message, you will see that it was a fuel filter and I didn't
stop using fram at that time because I thought it was just one bad
experience that I had. It wasn't until later when I started seeing stories
of people having fuel and oil filters leak or break apart internally and
clog the oil passages or pickup. You almost never see someone complain
about a failure in another brand but fram failures are found many times if
you search. It was then I realized that my failure wasn't just one bad
experiance that t was quite common and being a fuel filter could have
caused a lot more damage than a seized engine.
I read your message - no where do you TYPE anything about a fuel filter.
You commented about a leaking filter in a thread solely about oil
filters. This entire thread is about oil filters - try reading again. I
think you'll have to agree on this as well - rarely do people post about
GOOD experiences with products they use, this should be the norm
(getting good products) however with management/manufacturing practices
today this is starting to be the exception. What you DO see is people
complaining about bad experiences. I'd have a tendancy to believe that
of all the aftermarket oil filters out there - Fram might sell the most
simply because they are so commonly available at the AutoZones, Advance
Autos, Wal-Marts, etc. Has nothing to do with being good - more to do
with being easiest/cheapest to buy. So, with more units in use you
should see more possibilities for failures. This is why I'd like to see
actual MTBF numbers. You paint a picture that I'm ready to have my
engine seize or dangerously blow up due to Fram filters. My experiences
with Fram have been all good. YMMV
It's the gizmo on the new trucks that "monitors" your oil life and tells you
when it needs to be changed. When you change the oil and reset the monitor
it starts at 100% and wroks it's way down to 0%. )% means it needs to be
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