Lubricants

Four Stroke Oil

We stock the following oil for 4 stroke motors.

• Briggs Stratton  SAE 30 Air Cooled motor oil. Stable at high temperatures.
• Tecumseh Oil, the same as above.
• Plus 100 motor oil. This lubricant is made to race car specifications. It is very stable at high temperatures and is ideal for Air cooled 4 strokes.

We stock the following oil for 2 stroke motors.

• Castrol Super oil suitable for Air cooled 2 strokes, at a ratio of 25 to 1.
• Stihl Brand Synthetic oil to be mixed at 50 to 1. This oil does not burn and makes hardly any smoke. Ideal for all two strokes with ball or roller bearings. Do not use this lubricant in bushed motors like Iron Horse D series, and Sea Gull Outboards.

• Water Blaster Oil has to be resistant to oxidisation, rust, non-foaming and emulsify in water. We have BP HLP-Z-46 which is all of these things and also has a Zinc additive to prevent wear.
• Chain Bar Oil is a sticky lubricant which tends to resist being thrown off by the chain. It is also harmless to Magnesium Alloy. Considerable damage can be caused to magnesium alloy by the detergents in engine oil, by Ponga juice and by treated timber.
• Octane Booster and Valve Lube . Gold Eagle Quantum combines the two necessary ingredients needed to emulate 96 Octane leaded petrol.
  1. Replaces lead as octane improver and valve lubricant.
  2. Approved for all 4 stroke engines requiring a higher octane rating and valve lubrication. Stops engine knock, ping, and run-on. Will not harm Oxygen sensor.
  3. We have tested "O" rings and pipes in pure "Quantum" and found it to be completely harmless.
  4. Economical 6mls to 1 litre of fuel. Comes in 360ml packs, enough for 15 US gallons or 60 litres.
• Petrol Additive is available to prevent synthetic and unleaded fuels from going stale. Synthetic fuel has a short shelf life when mixed with oil, not more than 5 weeks. Adding a little STA-BIL to the fuel will keep it fresh. STA-BIL comes in small measuring containers and in 4 litre containers.
• Stihl Gear Grease comes in tubes with the same thread as the filler plugs on Stihl work heads and gear box's. This makes greasing gear box's very simple, without waste or mess.
• Straight gear Oil for bronze wheel gear box's, as used in Rotovators and some Mowers, i.e. Rotamower and Stevens.
  Hypoid gear oil will attack the bronze wheel, and is to be avoided.
• Inox spray is packed in aerosol cans and has 101 uses, these include removing rust and penetrating, lubricating delicate mechanisms, polishing Vinyl, restoring printer ribbons, preserving electrical gear, repels moisture, starts motors.
  You should always have a can of Inox in your tool box.
• Lanox which is the same with Lanolin added for longer lasting lubrication. Harmless to rubber and plastics.

Because Iron Horse motors have a bush in the lower crankcase, they need a thicker oil mix. The makers used to recommend 16 to 1, but we find that 25 to 1 is sufficient. Use normal mineral two stroke oil as synthetic oil should not be mixed at less than 40 to 1.

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Sea Gull outboards have bushes only,   without seals. They need a mix of 8 to 1 of SAE30 two stroke oil.

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Magnesium Alloy is used in Stihl chain saws to give them the highest power to weight ratio of any brand of saw. On the new Stihl saws, the vulnerable areas are covered in plastic.

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Magnesium, metallic element, symbol Mg, one of the alkaline earth metals in group 2 (or IIa) of the periodic table ; atomic no. 12, atomic wt. 24.305. Magnesium melts at about 649‹ C (1200‹ F), boils at about 1107‹ C (about 2025‹ F), and has a specific gravity of 1.74.

The metal, first isolated by the British chemist Sir Humphrey Davy in 1808, is obtained today chiefly by electrolysis of fused magnesium chloride. It is a silver-white metal and is malleable and ductile when heated. With the exception of beryllium, it is the lightest metal that remains stable under ordinary conditions. The metal is not attacked by oxygen, water, or alkalies at room temperature; it reacts with acids. When heated to about 800‹ C (about 1472‹ F), it reacts with oxygen and emits a brilliant white light.

Magnesium ranks sixth in natural abundance among elements in crustal rocks. It occurs in nature only in chemical combination with other elements, particularly as the minerals carnallite, dolomite, and magnesite; in many rock-forming silicates; and as salts, such as magnesium chloride, in ocean and saline-lake waters. It is an essential constituent of animal and plant tissue.

Magnesium forms divalent compounds, chief among which are magnesium carbonate, MgCO3, formed by the reaction of a magnesium salt and sodium carbonate, used as a refractory and insulating material; magnesium chloride, MgCl2·6H2O, formed by reacting magnesium carbonate or oxide with hydrochloric acid, used as dressing and filler for cotton and woollen fabrics, in paper manufacture, and in cements and ceramics; magnesium citrate, Mg3(C6H5O7)2·4H2O, formed by the reaction of magnesium carbonate with citric acid, used in medicine and effervescent beverages; magnesium hydroxide, Mg(OH)2, formed by the reacting of magnesium salt and sodium hydroxide, used in medicine as the laxative “milk of magnesia,” and in sugar refining; magnesium sulphate, MgSO4·7H2O, well known as Epsom salt; and magnesium oxide, MgO, called burnt magnesia, or magnesia, prepared by burning magnesium in oxygen or by heating magnesium carbonate, used as a heat-refractory and insulating material, in cosmetics, as a filler in paper manufacture, and as a mild, antacid laxative.

Alloyed forms of magnesium have considerable tensile strength. The metal is used when lightness is an essential factor: alloyed with aluminium or copper, it is used extensively in making castings for airplane parts; in artificial limbs, vacuum cleaners, and optical instruments; and in such products as skis, wheelbarrows, lawn mowers, and outdoor furniture. The unalloyed metal is used in photographic flashlight powders, incendiary bombs, and signal flares; as a deoxidizer in the casting of metals; and as a getter in achieving final evacuation in vacuum tubes.

The estimated world production of magnesium in 1989 was 350,000 metric tons; estimated U.S. production in the same year was 148,000 metric tons.

Crustal means from the outer crust of the earth.

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Hypoid

Hypoid gear Oil is an extreme pressure lubricant for differentials in motor vehicles ( except worm drive diffs ).
The oil has a very strong smell, whilst straight oil is almost odourless.

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SAE rating is a Viscosity rating at 100ºC. The higher the number the thicker the oil.

Multigrades

Multigrade oils eg. 20-50, mean that the oil is not thicker than SAE 20 when cold. and not thinner than SAE 50 at 100ºC.