For thirteen years I have been happily using Mobil 1 engine oil in my 2000 Impreza L Coupe. It has 95k+ miles and the engine runs beautifully, very smooth- a really,really, nice car overall.
Recently I bought a 2013 Forester XT, and
started testing different oils in both cars.
Most of the time the Impreza would get a
mix of 15w-50 and 10w-30. Proportion-wise
mostly 50/50, a little bit more 15w-50 in
the summer, a little bit more 10w-30 in the
I am in Reno and do a lot of mountain driving
at fairly high speed and fairly high RPMs
(especially going uphills). The engine sees
3200-3300 rpm's for hours on hours on the highway.
As I mentioned, I have been generally very happy
with regular Mobil 1 (not EP) changing it at around
3,333 miles (easy to remember on the odometer).
But things were never really perfect. The 15w-50
would make the car feel sluggish in the city,
and when not driving high rpms, while the 10w-30
would frequently feel somewhat too thin, and noisy
at start-up. The blend kind of addressed the issues.
When fresh Mobil 1 would always feel silky smooth,
and soft, fluffy almost. Particularly the 10w-30.
After several hundred miles it would become just
oil. The silky smoothness feel of new oil would
A few weeks ago I put Redline 10w-40 into the
Impreza and after more than 500 miles I wanted
to say I am very impressed, and recommend this oil.
The moment it was poured into the car I noticed
a completely different feel. Not the fluffy
softness of Mobil 1's first few miles, but a
certain very enjoyable firmness, great smoothness
without the fluff is best I can describe it.
The engine became more responsive, revs very
easily, and has more power. I have not expected
oil to be capable of making such a difference
in an afterall fast aging xar. With Redline it
feels a good couple of years newer.
I know this is a very expensive ester type oil,
(bought at Summit Racing in Reno with 10%
discount at $9.86 before tax per quart), but
I am still surprised as to its positive effects
(firm smoothness, feel of more power and responsiveness).
Considering that all the so called "fully synthetic"
oils costing $6-7 are nowadays mostly all fake,
non-PAO, non-ester type oils, maybe Redline is the
new "value" in premium oils ???
Anyway, I wanted to let you guys know of my
very good experience. I'll try to give an
update in a few k-miles how its holding.
BTW, the oil performs splendidly in the turbo
Forester, too, but with the old Impreza I've
had the experience of comparison to Mobil1,
and that is what I wanted to share.
- posted 6 years ago