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Commonly used in Open modified Flathead Engines turning 10+K RPMs!
Lightning SeriesThe originals that started them all. The FHS Endurance Racing Oil Series. They use our specially designed enhancers that have been researched, developed, tested, and proven for decades. They are designed to give incredible engine protection along with excellent speed. The film strength of these FHS oils is unmatched by the competitors. These are the tried and true oils that methanol racers around the country have come to rely on.
Whether you run high-end karting oil, racing car oil, motorcycle oil, or that cheap store name brand oil you buy at the grocery store, regardless of what oil you run in your air-cooled industrial engine, you must replace it frequently. Our 4-cycle kart engines do not have oil filters and run twice as hot as your liquid-cooled engine in your kart hauler. This means they break down and become contaminated quickly. To ensure you are getting all the benefits of the additives in your oil to prevent wear and increase the power, we recommend changing your oil at least once every race day(more times if its in the budget) or for recreational mild builds with no more than 10 hours of run time.
Returns- Returns must be communicated by customers within 7 days of delivery and sent back within 30 days to receive a refund. No returns without authorization will be accepted. All returns must be accompanied by a copy of the receipt and a note. All items must be returned complete and in new condition.
All returns are subjected to 20% processing and restocking charge after the product has been inspected. The shipping cost will not be refunded.
Refunds will be made back to the same method of payment when ordering those parts. We will not refund a different method of payment.
Non-returnable Items Include- Close Outs and Clearance Items, Special Orders, Custom Orders, Used Parts, and Cut to Length Items. (Other items may apply)
Shipping: All orders are shipped UPS Ground, UPS Surepost or USPS Priority when ordering online. Shipping charges are calculated based on weight, size, and quantity of boxes in addition to processing and handling including insurance. All shipping charges are the customer's responsibility (even if charges online are not the same as emailed or phone orders).
All standard shipping orders will be shipped within a day or two on weekdays. Orders placed on the weekend (Fri-Sun) will be shipped Monday or Tuesday or the first weekday after a holiday. Custom or Handbuilt Products may require more time to be built before shipping. For any reason, an order may be delayed or prevented you will be contacted through phone and/or email.
Express/2nd Day/Next Day Shipments: Express orders must be made by phone orders only! Orders placed after 12:00 p.m. CST. will be processed the Next Business Day. UPS will only guarantee next day shipment. If you choose 2nd-day shipments expecting it before the weekend, UPS does not guarantee its arrival
Additional Fees: Double Check that the address you gave is correct. You may be charged additional fees to redirect your package to the correct address.
PO Boxes: We can ship to PO Boxes using USPS. However, UPS will only accept shipments to a valid street address. They do not deliver to P.O. Boxes.
International Shipping: International buyers are responsible for paying duties, taxes, and applicable customs brokerage fees separate from the merchandise cost. Buyers will generally pay these fees upon receipt of your shipment. Buyers may be charged additional fees once they receive the package. Read our international policy here.
Paypal: All orders paid by a verified PayPal account will be shipped to the address on the Paypal account to comply with Paypal's policy. No Exceptions.
UPS Estimated Shipping Lead Times
USPS Estimated Shipping Lead Times