severe driving condition

I live in a city in appalachian mountain area and I think it is considered secere driving condition. I always use full synthetic motor oil. In such severe condition, how frequently should I change my full synthetic oil? 3000 miles/5000/7500 miles?
Experienced mechanics share their insights in answering this question :
The vehicle manufacturer publishes a severe service schedule for your car. If I knew your year, make, model, and engine size I could give you a precise answer based on manufacturer data. The Owner’s Manual will certainly have the schedule. Manufacturers of synthetic oil publish "suggested" maximum intervals but these are typically based on average conditions and do not override the specific instructions for oil change intervals that are published in the vehicle owner’s manual. Broadly, though, for severe service if you are using a synthetic that is advertised for a 10,000 to 15,000 service interval, you can easily use that oil for up to 7,500 miles for most severe service conditions. If you desire that this maintenance be performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine oil/filter change and the responding mechanic will get that taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

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While a normal maintenance schedule involves a review of the entire vehicle, a severe driving maintenance schedule focuses primarily on car fluids, like transmission oil, brake fluid, and engine oil. Make sure that you schedule severe driving maintenance in addition to your normal check-ups.
It may start overheating, which puts excessive wear on other engine components. Debris may also begin to damage metal components in your engine, or the sludgy oil may “seize”, causing a catastrophic engine failure. Even just driving for a few months with an overdue oil change can cause all of these problems – and more.
Severe service refers to the challenges levied on the valve itself, such as very high pressures and temperatures. Critical service refers to the potential consequences of the valve not working properly.
An oil change service is the simplest yet most important preventative maintenance service for your vehicle. Engine oil keeps all the moving parts in the engine operating smoothly and cleanses the engine of potentially damaging debris.
In many owner`s manuals the following are considered “severe” or average conditions: ▪ Frequent idling for long periods of time, such as stop-and-go driving in heavy traffic. Many vehicles are subjected to this condition twice a day in commuting to major cities. ▪
The 3 levels of driving ability

These skills fall into three categories: operational, tactical and strategic.

When oil has not been changed for a long time, it will begin to gel or solidify in an engine, eventually turning into sludge. When this happens, the oil will not be able to reach all parts of the engine, leading to oil starvation in the crankshafts, bearings, camshafts, and other valve train components.
Oil changes enhance, mileage and improve fuel economy. Unchanged oil loses the viscosity required to maintain its functions and thus affects the performance of the vehicle. You will notice that the car does run better after an oil change.
In a severe usage service, the car is checked end-to-end, part-to-part, and if there`s any replacements or repairs needed, they`re done.
An oil change service, however, is the changing of the oil; plus a safety inspection that examines the oil filter, cabin filter, a check of brake pads, tires, fluids, etc. The price for an oil change service is usually higher because of the extra care, value, and reports placed into the inspection.
An oil change is the process of draining old, used engine oil from a vehicle into a pan, and then replacing it with fresh, clean oil and a fresh oil filter. Like most lubricating and cooling fluids that help vehicles run, engine oil eventually needs to be changed.
Severe vehicle damage.

If your vehicle has suffered major structural damage—such as a bent frame—that makes it unsafe or impossible to drive, it is defined as severe. In many cases, you might assume that a vehicle that has suffered severe damage is totaled and beyond repair.

The wording and mileage ranges will vary slightly from one automaker to the next, but in general, these are the criteria for what constitutes “normal” driving conditions: Vehicle is driven approximately 12,000 to 15,000 miles per year. Vehicle is used for an even blend of local and highway driving.
Level 5 vehicles do not require human attention―the “dynamic driving task” is eliminated. Level 5 cars won`t even have steering wheels or acceleration/braking pedals. They will be free from geofencing, able to go anywhere and do anything that an experienced human driver can do.
Referred to as high-driving automation, Level 4 autonomy does not require any human interaction in the vehicle`s operation because it is programmed to stop itself in the event of system failure. Since a human driver is never needed, a Level 4 vehicle may not have a steering wheel and pedals.
“While synthetic generally holds up better and can serve for more miles, it is equally important to not extend oil changes beyond the time interval recommended by the manufacturer—typically six months or a year if it is a motor that is not driven many miles or on many short trips.”
Complete Engine Failure – If you go long enough without an oil change, it could cost you a car. Once the motor oil becomes sludge, it no longer removes heat from the engine. This can lead to a complete engine shutdown that will require a brand new engine – or a new ride – to fix.
Most conventional oil brands will have a shelf life of about 5 years. Synthetic oil and synthetic blend oil will last about 7-8 years, and maybe even longer. If you cannot find the expiry date, make sure you use up any half-opened or unopened motor oil bottles within 2-5 years of the manufacturing date.
As engine oil ages, it breaks down and becomes less effective at doing its job. Most manufacturers recommend getting the oil changed at least once per year, no matter how few miles you`ve spent on the road.
Note that if you do not put many miles on your car, most automakers recommend an oil change every 12 months, even if the maintenance reminder has not come on. AAA recommends that you plan ahead for vehicle service by finding an auto repair shop and technician you can trust before you need them.
Changing your oil offers a lot of noticeable benefits, as well. Regular oil changes improve your car`s gas mileage. As the fresh oil moves through the engine, the lubrication of the metal parts increases your engine`s performance and helps it run more efficiently with less work so it doesn`t eat up as much gas.
It`s important to note, however, that simple oil changes aren`t enough. You need to make sure your oil stays clean as well. People often ask, Does dirty oil ruin your engine? The short answer is yes.
Preventive maintenance – includes regular and periodic (time-based) schedules. Corrective maintenance – occurs when an issue is noticed. Predetermined maintenance – follows a factory schedule. Condition-based maintenance – occurs when a situation or condition indicates maintenance is needed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Can front wheel drive car engine power rear wheel drive
ANSWER : Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.

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Shifting issues from drive to reverse and back to drive
ANSWER : Mercedes has a dealer service order (#Order No: S-B-27.19/118A
) that addresses diagnosis, and possible dealer repair of the transmission for your model. Check with your dealer to confirm coverage of this.

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severe driving condition
ANSWER : The vehicle manufacturer publishes a severe service schedule for your car. If I knew your year, make, model, and engine size I could give you a precise answer based on manufacturer data. The Owner’s Manual will certainly have the schedule. Manufacturers of synthetic oil publish "suggested" maximum intervals but these are typically based on average conditions and do not override the specific instructions for oil change intervals that are published in the vehicle owner’s manual. Broadly, though, for severe service if you are using a synthetic that is advertised for a 10,000 to 15,000 service interval, you can easily use that oil for up to 7,500 miles for most severe service conditions. If you desire that this maintenance be performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine oil/filter change and the responding mechanic will get that taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

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While driving my drive decided not engage when I had to stop
ANSWER : Hello. The traction light is like a check engine light for your steering and suspension system. A technician could use a scan tool to pull any error codes to help pinpoint which component is faulty. I believe the problem your vehicle is having is a faulty shift solenoid. The transmission control module sends a signal to the shift solenoid for the shift solenoid to control the transmission shifting. By you paddle shifting you are basically bypassing the shift solenoid because you are controlling the transmission shifting yourself. If the shift solenoid fails completely you will not even be able to use the paddle shift function. It will be best to have your vehicle inspected by technician as soon as possible. You’re able to find a technician for transmission diagnosis here https://www.yourmechanic.com/services/not-able-to-change-gears-inspection

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The service 4 wheel drive light comes on in my 05 Chevy Silverado 1500 HD
ANSWER : It is not likely that damage will occur or is occurring. Generally, it’s only if the check engine light is actually flashing that you can reasonably expect damage. As far as whether what you are describing is a "known issue" or not, there are many GM Technical Service Bulletins for your year, make and model that refer to the Service 4WD indicator. A brief list of these TSB’s appears below. If you desire that a certified Mechanic inspect your vehicle and determine if any of the below TSB’s are applicable or, if not applicable, simply pinpoint the problem, please request a warning light diagnostic.

GM Manufacturer Communication Number: 05-04-21-003 (TSB)
SERVICE 4WD LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) C0374 SET. INSPECT WIRING HARNESS TO TRANSFER CASE SPEED SENSORS, REPLACE WIRING HARNESS.

GM Manufacturer Communication Number: 3137
SERVICE 4WD LIGHT ON AND NO COMMUNICATION WITH TRANSFER CASE CONTROL MODULE.

GM Manufacturer Communication Number: 3134B
SERVICE 4WD INDICATOR ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE CO327.

GM Manufacturer Communication Number: 3352
SERVICE 4WD LIGHT ON WITH EITHER A VARIETY OF DIAGNOSTIC TROUBLE CODES OR NO COMMUNICATION WITH THE TRANSFER CASE CONTROL MODULE.

GM Manufacturer Communication Number: 3526
INTERMITTENT SERVICE 4WD LIGHT COMES ON WITH DIAGNOSTIC TROUBLE CODE (DTC) C0306 OR C0308 STORED IN TCCM.

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My car will only shift into reverse and neutral, can’t get it into the drive gear
ANSWER : This may be a result of low transmission fluid or potentially a faulty transmission control module. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has various sensors such as vehicle speed sensors, wheel speed sensors, throttle position sensors, turbine speed sensor, and transmission fluid temperature sensors that all direct information to it in order for it to perform it’s function. Other functions controlled by the TCM are components such as a kick down switch, traction control system, and cruise control module. Any of these may also affect the way the transmission control module performs and controls the transmission and the shifting of your vehicle. I would suggest having a professional from Your Mechanic come to your location to properly diagnose your transmission problem.

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idle is low and engine light flashes when I drive.
ANSWER : Hello, and thank you for writing in. The vehicle may be having many types of problems. With a lack of power and a ticking sound, we must look at the level of the oil and the drive belt. Both can cause similar symptoms and noises. If your oil is low, then you have a leak and you need to turn your attention to finding it. If the belt is broken, frayed, loose, or a pulley is bad, then you will need to replace the belt and take any further corrective action. If these components check out, then you should turn your attention to the charging system and make sure the battery and alternator are working correctly. If necessary you can then resort to testing for proper fuel pressure, spark power, and look into the air intake system. For more diagnostic help, contact our service department to schedule an appointment.

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1995 f250 reverses fine but wont drive it still ingagues in gear but doesent move in 1 2 or drive
ANSWER : Hello there. Sometimes transmission linkage being misaligned can be the cause of this problem. In other cases, obstructions inside the hydraulic lines of the transmission or torque converter issues can cause problems like you’ve described as well. It is probably best to have a professional mobile mechanic come to your location and complete a car is hard to shift inspection to attempt and diagnose this issues before taking it in for repairs.

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