Oil changes

[marks73]

Some good reading

http://www.edmunds.com/car-care/stop-changing-your-oil.html?mktcat=maintenance-article&kw=stop+changing+your+oil&mktid=ob61762858&msite=w

 

[matrixx]

I for one own and operate a "quick Lube" car care center and i must say that a lot of this information is misunderstood by many "professionals". Oil technology has changed, yes. However many people out here at looking for the cheapest crud they can put in their vehicle. Many new cars call for a gl4 or gl5 based motor oil which is typically only found in synthetics and synthetic blends. Take Kia/Hyundia for example, the owners manual says oil should be changed at 7,500 mile intervals, look on the oil cap it will say gl4 5w20. Someone goes to the store and buys some off shelf brand motor oil that says 5w20 and runs that oil for 7500 miles. After 120,000 miles after the warranty is expired the whole inside of the engine and even the dipstick is tarnished so black and sooty, one could imagine how much varnish is inside the engine. Most conventional oil additive packs will wear out and stop protecting the engine after about 4-5000 miles, after that all the oil is doing will be keeping a slippery coating between moving parts. The 3,000 mile oil change is coming to an end but people need to be educated and read their owners manual before pouring anything into their engine just because the numbers match. Forced induction vehicles need even more protection, especially turbocharged vehicles where the motor oil is going through the bearings that can reach over 1,000 degrees internally. To put into perspective, todays modern conventional motor oil will "cook" at 375 degrees. I could go on and on but I felt the need to say that at my business I treat every vehicle differently as a Chevy HHR is very different from a Mercedes S500 or Hyundai Sonata. If anyone has any questions please feel free to ask away! Good find mark.

 

[auron73mach1]

Forced induction vehicles need even more protection, especially turbocharged vehicles where the motor oil is going through the bearings that can reach over 1,000 degrees internally.

Is that why my diesel needs over 4 gallons of oil?

 

[marks73]

I for one own and operate a "quick Lube" car care center and i must say that a lot of this information is misunderstood by many "professionals". Oil technology has changed, yes. However many people out here at looking for the cheapest crud they can put in their vehicle. Many new cars call for a gl4 or gl5 based motor oil which is typically only found in synthetics and synthetic blends. Take Kia/Hyundia for example, the owners manual says oil should be changed at 7,500 mile intervals, look on the oil cap it will say gl4 5w20. Someone goes to the store and buys some off shelf brand motor oil that says 5w20 and runs that oil for 7500 miles. After 120,000 miles after the warranty is expired the whole inside of the engine and even the dipstick is tarnished so black and sooty, one could imagine how much varnish is inside the engine. Most conventional oil additive packs will wear out and stop protecting the engine after about 4-5000 miles, after that all the oil is doing will be keeping a slippery coating between moving parts. The 3,000 mile oil change is coming to an end but people need to be educated and read their owners manual before pouring anything into their engine just because the numbers match. Forced induction vehicles need even more protection, especially turbocharged vehicles where the motor oil is going through the bearings that can reach over 1,000 degrees internally. To put into perspective, todays modern conventional motor oil will "cook" at 375 degrees. I could go on and on but I felt the need to say that at my business I treat every vehicle differently as a Chevy HHR is very different from a Mercedes S500 or Hyundai Sonata. If anyone has any questions please feel free to ask away! Good find mark.

Well put! Great info to know. Thanks. That's exactly the point I was looking for in the topic.

 

[matrixx]

4 gallons you are referring to a ford diesel I take it. Diesels rely on motor oil a lot more than a gas job. When you change your oil you may notice that after a few miles of driving the oil still looks black and sooty? Why, because there is roughly 3 quarts of oil that never gets changed from your injector pump and accompanying components. Your diesel has a high pressure oil pump that operates the injectors. The Turbo charger may allow for 40+ psi of forced intake charge. Most diesel trucks are built and used to be a workhorse and towing would cause your Turbo to be in boost a lot longer than a VW Jetta on the freeway. More boost the hotter the Turbo, the hotter intake charge, having 4 gallons of oil allows for that heat and the additives in the oil to be spread out amongst a larger quantity so you can change your oil 5 to 7,500 miles depending on the quality of oil used. If your truck held 2 gallons the almost 1 would always be in your high pressure system and 1 quart in your oil cooler, which would leave 4.5 quarts to get spent pretty quickly.

 

[Mikes73]

hi.....

i fully agree......During the initial start-up of the engine, the battery must work to start the car motor, and continues to work for the ignition system to crank. Under normal circumstances, the initial electricity from the charging system of the vehicle is enough to keep the car running. However, when the car is using too much electricity because of lights and radio or television, the battery is then discharged. I have visited the new York fashion week for getting a good idea about the new fashion.

Huh?:huh:

 

[matrixx]

Its spammers I reported he's made multiple post about this

 

[OMS]

Its spammers I reported he's made multiple post about this

BUT they are spamming about New York Fashion so I think Roy will be interested

 

[Tnfastbk]

Its spammers I reported he's made multiple post about this

BUT they are spamming about New York Fashion so I think Roy will be interested

Hey a man has to stay in style

 

[OMS]

I see you posted more of your vacation photos

 

[Boss1Ray]

Is that the NEW ROY or just the same one dressed up in his musclewear? rofl

Ray

 

[matrixx]

I reckon the thread needs a title change:huh:

 

[Tnfastbk]

I see you posted more of your vacation photos

Yeah but I cant believe how you rocked those shoulder pads

 

[marks73]

Its spammers I reported he's made multiple post about this

BUT they are spamming about New York Fashion so I think Roy will be interested

Hey a man has to stay in style

Isn't that the outfit you wore for the car show? rofl

 

[Tnfastbk]

BUT they are spamming about New York Fashion so I think Roy will be interested

Hey a man has to stay in style

Isn't that the outfit you wore for the car show? rofl

Not after LAbor day DUH

 

[marks73]

O.K. back to the oil fashion killers!

 

[73StangCoupe]

That was some good info... but I still have a question or two. I changed my oil back in June, I've driven the car about 1000 miles since then. Do I need to change the oil because 4 months have gone by?? If not, then when should I change it??

 

[matrixx]

Oil will not "go bad" sitting in your oil pan. The heating up and stress of driving wears outs the additives in your oil. However I recommend to change it once a year even if you only have 500 miles on that oil just in case the rare occasion that fuel or antifreeze has contaminated your oil.

Best way I tell my customers is engine oil is a "wear" item just like your brakes or clutch etc. If its not getting used, the less it wears.

 

[73StangCoupe]

Thanks matrixx... I was hoping you would say that. That Valvoline VR1 is pretty pricey.... I do check all my fluids each time before driving my car and the oil still looks great.