I'll preface this with the fact that I am not a car guy at all, but I'm trying to learn more about this stuff. So, any advice or guidance you can provide is MUCH appreciated.
I have an older '91 Q45 that I inherited from my grand father. Overall, it seems to be running pretty well, except for a "whining" noise that seems to be related to the power steering. I suspect that it may be leaking steering fluid, as at one point the power steering was really awful, and by adding some more fluid it improved drastically. Any advice on how to go about troubleshooting it to figure out the exact cause of the problem?
Also, a side question. The manual recommends a higher grade fuel than the typical 87 octane. Is this a valid recommendation? Does it really require a higher octane fuel?
Thank you so much for any information you may be able to provide!
