Synthetic oil for I-5s

[Jim Green]

--- scott thomas <scott at dreamtheater.zzn.com> wrote:
>
> I've swapped over four I5's with no problems
> whatsoever.
>
> In my experience, Rotella Synthetic 5w-40 works the
> best. Using M1,
> I see the oil pressure gauge start to drop, along
> with higher oil
> temps at about 2,500-3,000 miles. Syntec 5w 50 is a
> little better. I
> do get lifter noise that doesn't always go away
> after startup. With
> Rotella synthetic, I have lower oil temps and the
> pressure (I equate
> this to viscosity) does not drop very much by
> 5-6,000 miles. Last
> year, I went 9,000 miles (did a long road trip
> decided to change oil
> when I got back), tore the upper end apart and it
> was totally clean.
> Oil pressure and temps were still the same as the
> first day. It's
> cheaper and cleans out the engine really well. Shiny
> aluminum
> without the brown coating like M1 or Syntec. No
> lifter noise 3
> seconds after startup.

I've also heard good things about Rotella, my local
turbo shop highly recommends it.  I may just give it a
try this time around.



=====
Jim Green
'89 90tq 034EFI Stage II
http://www.mswanson.com/~jgreen/car_home.html

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