> Greg asks for real life experience; I've got some.
>
Chris K writes:
> The GT6+ is my autocrosser, so it sees severe duty. After 4000 miles
> with the Mobil 1, it has started leaking at the front seal. This is not
> uncommon with synthetics in older engines - they clean away the gunk
> that has been deposited in the seals and then find their way through
> the smaller cracks. I'll be replacing the seal soon.
About a year ago I replaced the oil in my Cobra's transmission,
differential and steering rack box with Redline synthetic gear oil.
Within a few months the diff and rack started leaking. On an older car
with seals and gaskets that aren't leaking I would stick with petroleum
based oils unless you don't mind the mess and keeping the oil topped
off.
Roland
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