I am buying a 1972 Renault 4TL - do I need to use a fuel additive with this motor? | Ask Honest John

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I am buying a 1972 Renault 4TL - do I need to use a fuel additive with this motor?

I am buying a 1972 Renault 4TL. Do I need to use a fuel additive with this motor?

Asked on 24 July 2019 by Martin Langwade

Answered by Keith Moody

Ask the current owner if he's been using an additive. With no lead in fuel, many owners were worried about valve seat recession - but to be honest, the low mileages done by classics mean that this is less of a problem. What tends to cause issues is the octane rating of fuel so you may find that your Renault 4 runs better on a high-octane fuel or with an octane booster.

Tags: classic cars fuel honest john classics fuel additives

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