List,
I run Mobil 1 in every one of my vehicles...including the lawnmower. I have
never experienced any problem with oil leakage on any Triumph I've put it in
(I've used it in 15+ TR6's). In the case of my '72 GMC with 137K miles on
it....it STOPPED leaking oil with the Mobil 1 installed.
Engines are not "designed" for particular types of oil....dinosaur or other
origin. Mobil 1 is simply an enhanced version of the mineral based oils.
It offers many advantages such as high resistance to sludge formation,
uniform molecular construction, and increased lubricity.
I ran Mobil 1 5W30 in my race car....dyno runs showed a 14 - 16 hp
improvement over mineral oils. After a season of racing (drag racing at
8200 rpm through the lights), the engine looked like new upon disassembly
and I didn't have any appreciable increase in cylinder leakdown rate....a
very different story than the previous season.
Granted Mobil 1 won't make your worn out hulk run like new, but if you have
an engine that is in good mechanical condition, Mobil 1 can't hurt. I
certainly feel it is worth the expense based on my experience.
Regards,
Chad Jester
2 TR6's, 1 Lawnmower, '79 Dodge LRT, Chevy Tahoe, VW Bug, '65 Herald, all on
Mobil 1.
----- Original Message -----
From: John Macartney <jonmac@ndirect.co.uk>
To: Triumph List <triumphs@autox.team.net>; Trevor Jordan
<tjordan@bigpond.net.au>
Sent: Tuesday, August 29, 2000 4:00 PM
Subject: Re: Mobil 1 and TR6
>
> Trevor Jordan wrote:
>
> >My car is probably worth $9,000 on the local market
> >and costs around $500 in registration and insurance charges per annum
> >(converted to US$ as you did below).
> >If I can get a little bit more protection and performance from a high
> >quality oil; leading perhaps to a slightly longer engine life, then
> >the relatively small additional cost is worth it. Admittedly, I can
> >get Mobil 1 for $25 for 5 litres (compared with $10 for Castrol GTX)
> >and a good quality oil filter for $7. At one oil change per year
> >(2000 km), $32 is not too much to pay.
>
>
> I would not disagree with your philosophy at all. What I meant to say (but
didn't in my
> last post) was that even when the cars were current and in production,
mileages in excess
> of 250,000 were commonplace before an engine swap, major rebuild or
disposal was
> undertaken. These distances were completed by many well-laden police cars
and some 2000
> saloons used by the Army and Air Force. My argument is that as these
distances were
> completed using entirely mineral based oils with the specs and additives
of 25+ years ago,
> the continuing use of an 'old fashioned' oil is not likely to be to the
general
> disadvantage of a six pot Triumph engine. Of course, on the assumption
that a modern
> synthetic even further prolongs engine life, I suppose we could push out
that rebuild date
> to 350,000? Are many people looking at that sort of mileage? It's all down
to personal
> preference and cost. Canley Girl had completed 218000 at the time of her
rebore and
> resleeve and she'd run mineral throughout. The DPO had not reworked the
head at that point
> and I know the rocker shaft was the original one when I removed it.
Careful examination of
> the wear on the shaft and rockers showed that where there were bad
elipses on the rockers
> and corresponding wear on the shaft, this was largely attributable to
incorrectly adjusted
> valves. I've nothing against Mobil 1 - apart from its crippling cost in
the UK and I know
> many are of the same view.
>
> Jonmac
>
|