Guest gordond Posted April 1, 2010 Share Posted April 1, 2010 My 1st Riviera (63 - Very Nice!) delivered today. First advice needed (of probably more later...) is fuel . Manual says 99 RM octane. Get the highest I can...Octane booster? Lead substitute? Brands? Thanks from very excited new owner! Link to comment Share on other sites More sharing options...
tim63riv Posted April 1, 2010 Share Posted April 1, 2010 Gordon,Welcome aboard! You have my favorite Riviera, the unique 63! I would try the best premium you can find and go from there. The only octane booster I have ever used is 104+ and it worked well. Feel free to ask away, lots of help available here!Tim Link to comment Share on other sites More sharing options...
Guest gordond Posted April 1, 2010 Share Posted April 1, 2010 Tim, Thanks for input. I may sleep in garage 2nite- I'm lovin' this car! Gordon Link to comment Share on other sites More sharing options...
Guest DLT Posted April 1, 2010 Share Posted April 1, 2010 Enjoy your new Riviera! Another product to consider is Octane Supreme 130. This is a product with tetra ethyl lead and will boost the octane as well as add lead - or so they claim.This is one place were it can be ordered via the web that I know of:Octane Supreme130 12 Qts | BatteryStuff.comIf you have access to an community airport you can also purchase aviation gas which is 104 Octane (need to bring a can as most will not allow you to fill the car directly). 5 gals then fill the tank with a good high octane unleaded and no knock when set to the correct timing. The downside is $5 a gallon. But it works! Link to comment Share on other sites More sharing options...
TexRiv_63 Posted April 1, 2010 Share Posted April 1, 2010 Gordon,If your engine has some miles on it you may not need additives. My 63 ran fine on 93 octane unleaded premium, try that before dumping in anything else. Link to comment Share on other sites More sharing options...
Guest Gee_Rydes Posted April 1, 2010 Share Posted April 1, 2010 Shouldn't you be able to run the lowest octane until the car starts to ping? Even that could be addressed with a slight change in timing. I usually will "test" a half tank at a time with a lower octane than the previous "good" tank. That way if she pings under heavy load, I have an empty half tank to average it out by adding some higher octane.Maybe not the answer for the best "performance", but certainly a functional for driveability. If you were strictly trying to get the most power out of your engine, you would adjust the timing and use a higher octane fuel. The reverse should also be true.Many times we run high octance when it is unnecessary and almost wasteful, I think. On newer cars, they actualy recommend 87 because a 93 would contribute to soft carbon buildup. Link to comment Share on other sites More sharing options...
michel88 Posted April 1, 2010 Share Posted April 1, 2010 Gordon,Your 63 Riviera is a great and beautiful car which I am sure you are going to enjoy owning. I have had my 63 Riv for over 20 years and it has been a great and reliable car. The compression ratio is: 10.25:1 and requires premium 92-93 octane. I have never used any additives and don't think you need to. Link to comment Share on other sites More sharing options...
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