Whats the best oil for the 915 5speed transmission

[shawn911]

Hi, I was just wondering whats the best grade and type of oil for the 915 type 5 speed gearbox?, ive been told that by using a thick 80/90 hypoid oil it can be hard to select gears sometimes?

Shawn,

1976 911 targa 2.7
1979 :rolleyes911 3.0 coupe

[GrantG]

Swepco 201 is the unanimous choice (don't know if it's easy to get in Spain). Pelican sells it...

[shawn911]

Hi, Is that a hypoid gear type oil? or a special type, ive never heard of that here, do you know the grade of swepco, ie 75/80 or 80/90 etc
Cheers.

[GrantG]

Use the 80W/90:
http://swepcousa.com/lubesite/products/h201.htm

Available at Pelican

[shawn911]

ok cheers for that.

[Geary]

In Spain you should be able to easily obtain Castrol LSX90. This dino oil is much less expensive than imported Swepco, with a good reputation for high pressure protection.

While the 915 doesn't have a hypoid R&P, hypoid oils have good high pressure protection.... which is why they're highly recommended for small-geared early Porsches.

[RoninLB]

Swepco is highly recommended by some of the best 915 race track tranny rebuilders in the US.

[CharlesJones]

I've got a similar problem in that Swepco isn't readily available here in Ireland and would be terribly expensive to import it from America. I will try and look for the Castrol LSX90 which Geary suggests, but if I can't find that does anyone know of any other Europe available Swepco alternatives?

[Geary]

Castrol LSX90 is readily available in Europe, but not available to us here in the U.S.

[Palum6o]

I switched to Swepco 201 earlier this year. It did help smooth the shifting a bit into 2nd, especially when it warms up. This also took a couple months to notice it, does the fluid need to "break in" a little? Also, is it normal to have a drip or two leak out every week or two after a change? I didn't have a leak before?? I'm wondering now if I should have it checked. I have also confirmed that this car does much better off driven frequently and hard at times rather than sitting in the damn garage, like women and sex...

[pete917]

Swepco do synthetic and non synthetic. Which is best for the 915?

[livi]

Originally Posted by pete917

Swepco do synthetic and non synthetic. Which is best for the 915?

Non synthetic. Like the 201.

[JBO]

Most importantly, if you use anything other than Swepco your trans will not go into gear, and will self destruct in short order....