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The end of 4-star has arrived... If you live in the UK, you will be aware of the fact that the Government has banned leaded (known as 4-star) petrol from general sale as of the 1st January 2000. This is as a result of European legislation to reduce the amount of harmful emissions, including lead, from road traffic. During the latter half of 1999, garages began switching to LRP (Lead Replacement Petrol) and by November it was basically impossible to buy leaded petrol anymore. No Capris were ever built that were suitable for using unleaded petrol directly. Do not believe anyone who says differently. However you can directly swap your cylinder head for a late model Sierra (1988-1990) which was fitted with an unleaded head (note the information on the next page) or alternatively have hardened valve inserts fitted. Budget around £120 if you take the head off yourself or £300 for the garage to do everything. You must not run your unmodified Capri on unleaded fuel only. If you do not get your head converted or replaced then you must either use a petrol additive (see later), or use LRP (lead replacement petrol). The general consensus is that it is cheaper and better to use the additives with unleaded rather than use LRP. I started off using LRP in my Capri but I noticed a drop in performance and poor cold starting. After a couple of months I switched to unleaded using a 4-star replacement additive. In my case it was Redex 4-star replacement. This worked out cheaper than LRP even with the additive cost and the results were good. More recently my Capri has been taken off the road for a restoration and I have removed the cylinder head. It has now had hardened valve seats inserted and will run off unleaded petrol permanently. However I still plan to use the lead substitute additive as this enables the car to run without retarding the ignition which reduces both power and performance. |
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