Cooling water help

[jasonhepp]

Lotus ownders,

Have been having a few minor cooling water leaks from my '90 Turbo. When I got the car the checks stated that water pump seal is weeping -check in 1000k's. The mechanic said the car had not been driven much in the last 12 months so I thought it might take up with some regular use. It occasionally has been leaking (comes from centre of car just in front of back wheels from a triangular 300mm size open section). Cant get under to look further. I refill with approx 1L every week (for about 2 months).

Couple of questions;

1. Have been topping up with fresh water, will add some antifreeze-boil to it now that the leak is a bit more noticeable. Is there a preferred type or should I ensure I use the same as currently in the car.

2. Is this likely to be the water pump seal ?.

On other issues;

3. The car currently has Pennzoil Multi VIS 20W50 SJ/Cf enginer oil. Is this the preferred. I live in Aussie can rarely below 0degC.

4. Preferred gearbox oil ??


I need to get a Maintenance Manual, have seen some of the sites, is the general '87? to '91 manual really applicable for a 90 Turbo ?.

thanks

jason

P.S. Love my car