TetraBOOST 'E' Guard 15 in competition

More power, more torque, better controlled burn characteristics

Since the year 2000, TetraBOOST has developed an excellent reputation in competition. Not only amongst the vintage and classic car racing fraternity, whose engines depend on leaded fuel, but also amongst competitors who use the product purely to boost the octane of the available fuel at race circuits. During those years, TetraBOOST has been used in numerous different makes of car, on circuits and in hill climbs, where we have helped achieve a number of FTDs and personal bests. Amongst the many marques of cars racing or hill climbing on TetraBOOST are:


  • Alfa Romeo 1750, 6C, 8C
  • Aston Martin, 1½ & 2 litre, DB4GT
  • AC Ace, Aceca Bristol, Cobra 4.7
  • Bentley 3, 4½, 6 & 8 litre, Napier Bentley and numerous Mk VI specials
  • BRM
  • Bugatti Brescia, T35, T35B, T51
  • Cooper Climax
  • Delage
  • Ford GT40
  • Frazer Nash
  • Ferrari (numerous models from early V12s to 308s)
  • Ginetta
  • H.A.R.
  • Invicta 4½ Meadows in standard tune and Sanction 3 tune

TetraBOOST and a Riley

  • Jaguar 3½, SS100, C, D, XK 120/150, E-type
  • Keift
  • Lagonda 2 litre and 4½ litre
  • Lotus 7, (+ Caterham) Elite and Europa
  • Maserati 4CL, 6CL and 250F
  • MG (numerous pre and post war models)
  • Riley 9s, 12/4 specials, 16/6 special
  • Shelby Mustang 289ci
  • Sunbeam Tiger
  • Vauxhall 30/98
  • Wolsley Hornet Special

We supply TetraBOOST to many of the leading restorers, engine and race preparation specialists, acknowledged marque experts and National Motor Museums, well known to the vintage, classic and historic fraternity.


In addition to giving total protection to valves and guides and boosting octane, TetraBOOST has been found to give easier starting, improved acceleration and engine response and increased BHP and torque figures on the dyno. Typically TetraBOOST gives 3% more bhp and 3-4% more low down torque. It also gives cooler running and more controlled burn characteristics. For high compression engines it can make 5 star 100 octane and on up to 106 octane if needed. Of passing interest, it has been reported that TetraBOOST gives added economy, with one client reporting that his Ferrari BB512 regularly returns 15mpg on TetraBOOST, rather than the 12mpg previously seen. Out of season, our new improved TetraBOOST 'E' Guard 15 helps to protect against internal corrosion, acid formation due to ethanol water absorbtion and acid formation during periods of storage and unlike certain substitutes, it will not cause bore rusting or separate out during periods of inactivity. Overall TetraBOOST gives all the traditional advantages of genuine, high-octane race fuel at a considerably lower cost.

TetraBOOST is now being used in almost all classes of racing, hill climb and rallying where fuel choice is free, or where approved additives are permitted.

TetraBOOST 'E' Guard 15 recommends Shell V Power for race use.

For all cars fitted with foam filled tanks, please ensure that TetraBOOST and the base fuel are mixed in a churn or jerry can prior to filling the tank.