Thank you to all who gave me advice i have checked my alternator and it is now 14 volts, I don't know what happened but looks like it is back to normal. I will be keeping an eye on it.
We just had to replace the alternator on one of our Subaru Foresters. It was fine when cold but when it got hot, it would drop voltage.
Subaru wanted $1800 for a new one! :eek: We bought aftermarket.