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Equipped with the 6.2L LS3 Gev IV Small Block V8

OC90 OC110 OC130.png

Congratulations on being the proud new owner of an Osprey Custom 4x4! We’ve prepared this guide to help ensure you’ll enjoy trouble-free operation for many years to come.


In general, vehicles need much less maintenance than the vehicles of years ago, but they still have needs. You no longer have to do a service every 6 months or change the oil every 3 months, but regular maintenance checks and fluid changes are still essential to your vehicle’s longevity.


What follows is our quick reference guide to many of the recommended routine maintenance tasks for the OC90, OC110, and OC130 vehicles from 2020 onward, most of which you can do yourself at home. Of course, if you’re not comfortable performing any of the recommended maintenance yourself, we recommend visiting a qualified service facility. If you need additional guidance, information, or would like step-by-step instructions, please feel free to contact us via email at

Please accept our best wishes for many years of pleasurable and safe driving in your Osprey Custom 4x4! We truly hope you enjoy your one-of-a-kind vehicle and have as much fun driving it as we did building it!

The Osprey Customs Team



Utility vehicles have a significantly higher rollover rate than other types of vehicles.

Since this vehicle is designed to be operated off-road, it has a higher ground clearance and hence a higher center of gravity. Such a feature has been associated with an increased risk of vehicle rollover. The vehicle is not designed for cornering at the same speed as conventional passenger cars any more than a low-slung sports car is designed to perform satisfactorily under off-road conditions. If at all possible, avoid sharp turns or abrupt maneuvers. As with other vehicles of this type, failure to operate the vehicle correctly may result in loss of control or vehicle rollover.


Another factor shown to significantly increase rollover risk is unauthorized vehicle modifications such as fitting incorrect specification tires, oversize tires, body lifting, incorrect springs/dampers, and incorrect vehicle loading/trailer towing. Many vehicle rollovers occur when a driver attempts to bring a vehicle back onto the road after some or all of the wheels drift onto the shoulder of the road, especially when the shoulder is unpaved. If you find yourself in such a situation, do not initiate any sharp or abrupt steering and/or braking maneuvers to re-enter the roadway. Instead, let the vehicle slow down as much as is safely possible before attempting to re-enter the roadway, and keep your wheels as straight as possible while re-entering the roadway.


On-road crash data also indicates that driver behavior is a greater factor than a high center of gravity in determining a vehicle’s overall rollover rate. The single most effective driver behavior that can reduce the risk of injury or death in all crashes including rollovers is to ALWAYS WEAR YOUR SEAT BELT and to properly restrain all child passengers in the rear seat in an age- and size-appropriate child safety seat or belt-positioning booster seat.


In a rollover crash, an unbelted person is significantly more likely to die than a person wearing a seatbelt. ALWAYS WEAR YOUR SEATBELT!


The vehicle is built using high-precision manufacturing methods, but the moving parts of the engine must still settle in relative to each other. The breaking-in process occurs mainly in the first 2,000 miles of operation.

During the breaking-in period of the first 2,000 miles, observe and follow the instructions below:

  • Do not fully press the accelerator pedal.

  • Avoid high engine speeds (rpm) until the engine has reached its full operating temperature.

  • Avoid operating the engine in too high a gear at low engine speeds (laboring).

  • Gradually increase engine and road speeds.

  • Avoid extended operation at high engine speeds with abrupt stops.

  • Avoid frequent cold starts followed by short-distance driving. Where possible, allow the engine to reach operating temperature.

  • Longer journeys are more helpful during the breaking-in period.

  • Do not participate in off-road driving, competition driving, track days, sports driving schools, or any similar events.



Premium Unleaded -92 (R+M/2)


Mobil 1® SAE 5W-30 Synthetic, 5.5qt w/ filter


ACDelco®,  #PF48


Fram® Extended Life Prediluted 50/50, #F401


Valvoline® Dot 3 & 4, #601458


Fram® Dexron III / Mercon Multi-Vehicle ATF, #F420



Fram® Dexron III / Mercon Multi-Vehicle ATF, #F420



Fram® 80W-90, #F78005


ACDelco® Gold 800CCA/1000CA, #78DTPS



Dayco® Poly Rib, #5060830 / #5060827



XtraClear® Standard Beam Blade, 13”, #XC13



16” Tires, Front: 32psi / Rear: 36psi

18” Tires, Front: 34psi / Rear: 38psi

20” Tires, Front: 34psi / Rear: 38psi


On a daily basis, it’s a good idea to look for fluid deposits underneath the vehicle that might indicate a leak. Condensation drips from the air conditioning (A/C) system are normal.


Any significant or sudden drop in fluid levels or uneven tire wear should be reported to a qualified technician without delay. Ignoring these concerns may cause damage to the vehicle.


1. Engine oil level – The oil level should be between the low and full line on the dipstick. If your oil light comes on in the time between these level checks, stop the vehicle, turn off the engine, and check the engine oil level. Top off as necessary and schedule a service appointment if this condition persists. 

2. Windshield washer fluid level – You can't go wrong topping this one off whenever you're under the hood. It's too easy! We shipped your vehicle filled with Rain∙X® Bug Remover 32º washer fluid, which we have found to be an excellent choice!

3. Coolant level – When the engine is cool, the level should be to the bottom of the radiator filler neck.

4. Brake fluid level – The level in the reservoir should be between low and full. If it's low, have your vehicle towed to a repair facility if you're not experienced in brake system repairs. Brake fluid is essential for your brakes to work, and a low fluid level indicates a serious safety issue.

5. Transmission fluid – If you don't have a transmission dipstick, skip this one. If you do, you're going to look and smell the fluid. It shouldn't be too dark or have a bitter, burned smell.

6. Power steering fluid level – Check the level, and top off if needed.

7. Tire pressures – Get in the habit of keeping proper pressures for optimal handling and fuel efficiency as well as prevention of costly abnormal wear or unsafe conditions.

8. Hoses – A good hose inspection requires looking and touching. Hoses should be free of leaking fluids and bulges which indicate internal failure. They should also not feel too hard, having a little flex, especially when warm.

9. Belt(s) – Serpentine belts, also commonly called drive belts, should not look glazed, cracked, or frayed.

10. Interior and exterior cleanliness – We promise we're not judging you when you eat your fries in the car! Keeping your vehicle clean inside and out helps protect your investment, and you'll thank yourself later when your resale value is tip-top.


1. Oil and filter change – Changing your oil is probably the most important maintenance for your engine, so don't fall behind on this one. And don't forget that filter! The oil drain plug should be tightened to 60N∙m (44lbf⋅ft).


Always dispose of used engine oil and other fluids properly. ​​Pollution of drains, waterways, or soil is illegal. Use authorized waste disposal sites to dispose of used oil and toxic chemicals.


Prolonged contact with engine oil and/or other vehicle fluids may cause serious skin disorders, including dermatitis and cancer of the skin or irritation of the eyes. Always wash thoroughly after contact.

2. Tire rotation – Rotating your tires is one of the best ways to maximize their life.

3. Lights – Some lights are more noticeable than others when they stop working. It's a good habit to go around and check the lights whenever you're waiting for the oil to drain.

4. Battery – Check your battery and cables for corrosion of leaking fluid on the top of the case. Either of these will reduce the battery's performance, and cleaning corrosion is easy.

5. Engine air filter – These filters generally can be changed once every 12 months, but it's good to check them more frequently, especially when driving in heavy dust or pollen areas.

6. Wiper blades – Operate your blades and check to see that they're not streaking or making patchy contact with the windshield. You can also run your finger along the length of the blade to feel for cracks. Economical blades probably need to be replaced every six months, while premium types can last two or even three times longer.



1. Alignment – A vehicle in need of alignment is sometimes quite obvious, with pulls to one direction or wandering. Even if your vehicle tracks in a straight line, though, checking the alignment once every year or two is a good idea. Not every alignment issue will cause a pull but could still lead to premature or uneven tire wear.

2. Brakes – Brake problems tend to make themselves known. Most commonly, worn pads will make a squealing sound by design. Because they're such an important safety item, though, we highly encourage periodic checks of all four brakes. Look at pad material, rotors, and inspect for brake fluid leaks.


The part numbers described in this publication are available at Advance Auto Parts®, Carquest®, WorldPac®, Western Auto Supply Company®, Discount Auto Parts, Inc.®, and Autopart International, Inc.®. These parts and interchange parts are also available at other national auto parts retailers. These part numbers are being provided as a convenience and for informational purposes only; they do not constitute an endorsement or approval by Osprey Custom 4x4, LLC of any of the products, services, or opinions of the above-mentioned corporations. Osprey Custom 4x4, LLC bears no responsibility for the accuracy, legality, or description of the parts offered by the above-mentioned corporations. Contact the respective corporation directly for answers to questions regarding any parts offered.


The information contained in this guide covers all vehicle derivatives and optional equipment, some of which may not be fitted to your vehicle. Due to printing cycles, this guide may include descriptions of options before they become generally available. Images used in this publication are for illustrative purposes only and may not reflect exactly what is fitted to your particular vehicle.


The vehicle options, hardware, and software are designed for the market in which the vehicle was intended for the original sale. If the vehicle is to be registered or used in another geographical area, it may need modifications to suit local requirements. Signature Autosport, LLC and/or Osprey Custom 4x4, LLC is not responsible for the cost of any modifications. Any applicable warranty conditions may be affected.


The information contained in this publication was correct when it went to print. Subsequent vehicle design changes may result in a supplement being added to the literature pack. In the interest of development, the right is reserved to change specifications, design, or equipment, at any time, without notice, and without incurring any obligations. This publication, or part thereof, may not be reproduced nor translated without our approval. Errors and omissions excepted.

Osprey Custom 4x4, LLC

4704 N College Rd, Castle Hayne, NC 28429


© 2020 Osprey Custom 4x4, LLC

REV 9/2022-1.1

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