4x4Panama.com     /     Donde nace el Off Road en Panamß  

Go Back   4x4Panama.com / Donde nace el Off Road en Panamß > Technical Off Road > General Questions

Reply
 
Thread Tools Display Modes
  #1  
Old 27-01-2009, 09:40 AM
walter's Avatar
walter walter is offline
Master Off Road Driver
 
Join Date: Nov 2007
Posts: 2,675
Thanks: 431
Thanked 251 Times in 162 Posts
walter is on a distinguished road
Default Clasificaci˛n de aceites

QuiŔn podrýa,detallar las diferentes clases de aceites para motores?
p.e.
15w40 es ....... y sirve para ........
40 para diesel es ......y sirve para........
etc.....................
se le agradece.
__________________
CJ 6, V8 350, modificado
Walter Maier Chorizos & BBQ

WALTER MAIER CHORIZOS BBQ

facebook.com/waltermaierbbq

twitter.com/waltermaierbbq
Reply With Quote
  #2  
Old 27-01-2009, 10:19 AM
RiberWare's Avatar
RiberWare RiberWare is offline
Master Off Road Driver
 
Join Date: Nov 2007
Location: Panamß
Posts: 2,738
Thanks: 131
Thanked 375 Times in 239 Posts
RiberWare is on a distinguished road
Send a message via ICQ to RiberWare Send a message via MSN to RiberWare
Default Re: Clasificaci˛n de aceites

Oil Grades
Range of Motor Oils on display in Kuwait


The Society of Automotive Engineers, usually abbreviated as SAE, has established a numerical code system for grading motor oils according to their kinematic viscosity. SAE viscosity gradings include the following: 0, 5, 10, 15, 20, 25, 30, 40, 50 or 60. Some of the numbers can be suffixed with the letter W, designating their "winter" or cold-start viscosity, at lower temperature.
Viscosity is graded by measuring the time it takes for a standard amount of oil to flow through a standard orifice, at standard temperature. The longer it takes, the higher the viscosity, and thus higher SAE code.
Note that the SAE operate a separate viscosity rating system for transmission oils which should not be confused with engine oil viscosity. The higher numbers of a transmission oil (eg 75W-140) do not mean that it is necessarily higher viscosity than an engine oil.

Single-grade

For single-grade oils, the kinematic viscosity is measured at a reference temperature of 100░C (212░F) in units of mm▓/s or the equivalent older non-SI units, centistokes (abbreviated cSt). Based on the range of viscosity the oil falls in at that temperature, the oil is graded as an SAE number 0, 5, 10, 20, 30, 40, 50, or 60. The higher the viscosity, the higher the SAE grade number is. These numbers are often referred to as the weight of a motor oil. The reference temperature is meant to approximate the operating temperature to which motor oil is exposed in an engine.
The viscosity of single-grade oil derived from petroleum unimproved with additives changes considerably with temperature. As the temperature increases, the viscosity of the oil decreases logarithmically in a relatively predictable manner. On single-grade oils, viscosity testing can be done at cold, winter (W) temperature (as well as checking minimum viscosity at 100░C or 212░F) to grade an oil as SAE number 0W, 5W, 10W, 15W, 20W, or 25W. A single-grade oil graded at the hot temperature is expected to test into the corresponding grade at the winter temperature; i.e. a 10 grade oil should correspond to a 10W oil. For some applications, such as when the temperature ranges in use are not very wide, single-grade motor oil is satisfactory; for example, lawn mower engines, and vintage or classic cars.

Multi-grade

The temperature range the oil is exposed to in most vehicles can be wide, ranging from cold ambient temperatures in the winter before the vehicle is started up to hot operating temperatures when the vehicle is fully warmed up in hot summer weather. A specific oil will have high viscosity when cold and a low viscosity at the engine's operating temperature. The difference in viscosities for any single-grade oil is too large between the extremes of temperature. To bring the difference in viscosities closer together, special polymer additives called viscosity index improvers, or VIIs are added to the oil. These additives make the oil a multi-grade motor oil. The idea is to cause the multi-grade oil to have the viscosity of the base number when cold and the viscosity of second number when hot. This enables one type of oil to be generally used all year, and when multi-grades were initially developed, they were frequently described as all-season oil. The viscosity of a multi-grade oil still varies logarithmically with temperature, but the slope representing the change is lessened. This slope representing the change with temperature depends on the nature and amount of the additives to the base oil.
The SAE designation for multi-grade oils includes two grade numbers; for example, 10W-30 designates a common multi-grade oil. Historically, the first number associated with the W (again 'W' is for Winter, not Weight) is not rated at any single temperature. The "10W" means that this oil can be pumped by your engine as well as a single-grade SAE 10 oil can be pumped. "5W" can be pumped at a lower temperature than "10W" and "0W" can be pumped at a lower temperature than "5W". The second number, 30, means that the viscosity of this multi-grade oil at 100░C (212░F) operating temperature corresponds to the viscosity of a single-grade 30 oil at same temperature. The governing SAE standard is called SAE J300. This "classic" method of defining the "W" rating has since been replaced with a more technical test where a "cold crank simulator" is used at increasingly lowered temps. A 0W oil is tested at −35 ░C (−31 ░F), a 5W at −30 ░C (−22 ░F) and a 10W is tested at −25 ░C (−13 ░F). The real-world ability of an oil to crank in the cold is diminished soon after put into service. The motor oil grade and viscosity to be used in a given vehicle is specified by the manufacturer of the vehicle (although some modern European cars now make no viscosity requirement), but can vary from country to country when climatic or mpg constraints come into play.
__________________
http://youtube.com/riberware

'83 JEEP 5/4-TON CJ-7 on 42-1/2"s
'98 HDJ-80 (Toy MallCruiser on 37"s)
Reply With Quote
The Following User Says Thank You to RiberWare For This Useful Post:
walter (27-01-2009)
  #3  
Old 10-02-2009, 09:51 AM
AllanY AllanY is offline
Off Road Bug on you
 
Join Date: Nov 2007
Location: Ciudad de la Furia
Posts: 54
Thanks: 0
Thanked 6 Times in 6 Posts
AllanY is on a distinguished road
Send a message via MSN to AllanY
Default Re: Clasificaci˛n de aceites

Quote:
Originally Posted by walter View Post
QuiŔn podrýa,detallar las diferentes clases de aceites para motores?
p.e.
15w40 es ....... y sirve para ........
40 para diesel es ......y sirve para........
etc.....................
se le agradece.
hmm hay cosas q se me olvido de los aceites una de las que me acuerdo es que el aceite de motor diesel tiene mas antioxidantes q el de gasolina asi q no es recomendado usarlo en motores diesel. El reply de ricky esta muy bueno y muy tecnico hay q leerlo bien bien. Otra cosa los aceites tiene un dibujo atras como un circulito que dice sae, sp, y otras letritas q te indican si es apto para diesel o gasolina la traduccion de las letras te la debo.
espero q sirva un poquito lo que escribi ya q no me acuerdo por ahora de mas nada jijij
Reply With Quote
  #4  
Old 10-02-2009, 10:32 PM
JuanCarlos's Avatar
JuanCarlos JuanCarlos is offline
Master Off Road
 
Join Date: Nov 2007
Location: La Chorrera, PTY
Posts: 1,536
Thanks: 159
Thanked 62 Times in 47 Posts
JuanCarlos is on a distinguished road
Send a message via MSN to JuanCarlos
Default Re: Clasificaci˛n de aceites

Lo poco que se es que los de origen Fosil(la mayoria) tienden a perder sus propiedades de lubricaciˇn, con la friccion, las altas temperaturas, manejo severo, polvo,y demas impuresas mas rapido que los de origen sinteticos que demoran muchisimo mas.
mi recomendaciˇn Castrol o Movil1 sinteticos
saludos
JC
Reply With Quote
  #5  
Old 10-02-2009, 10:35 PM
RiberWare's Avatar
RiberWare RiberWare is offline
Master Off Road Driver
 
Join Date: Nov 2007
Location: Panamß
Posts: 2,738
Thanks: 131
Thanked 375 Times in 239 Posts
RiberWare is on a distinguished road
Send a message via ICQ to RiberWare Send a message via MSN to RiberWare
Default Re: Clasificaci˛n de aceites

yo no creo en aceites que duran mas... de seguro son mejores, pero ni ˝eks me corro el riesgo de joder mi motor... por lo tanto en mi opinion para no golpear el bolsillo lo mejor es un aceite intermedio y cambios en intervalos cortos... asi vas seguro...
__________________
http://youtube.com/riberware

'83 JEEP 5/4-TON CJ-7 on 42-1/2"s
'98 HDJ-80 (Toy MallCruiser on 37"s)
Reply With Quote
  #6  
Old 10-02-2009, 11:09 PM
JuanCarlos's Avatar
JuanCarlos JuanCarlos is offline
Master Off Road
 
Join Date: Nov 2007
Location: La Chorrera, PTY
Posts: 1,536
Thanks: 159
Thanked 62 Times in 47 Posts
JuanCarlos is on a distinguished road
Send a message via MSN to JuanCarlos
Default Re: Clasificaci˛n de aceites

mira Rich, es sencillo si utilisas por ejemplo el aceite mas gallo, monogrado 40 o 50, te aseguro que va a perder rapidamente sus propiedades, el cual no va a proteger tu motor como el caso de los multigrados llamese castrol,penzoil, quaquer, movil1 etc. asÝ mismo cuando utilisas uno sintetico sus propiedades quimicas no le permiten degradarse tan facilmente, por eso es que protege mas intensamente y por mas tiempo.
saludos
JC
Reply With Quote
  #7  
Old 11-02-2009, 03:19 PM
AllanY AllanY is offline
Off Road Bug on you
 
Join Date: Nov 2007
Location: Ciudad de la Furia
Posts: 54
Thanks: 0
Thanked 6 Times in 6 Posts
AllanY is on a distinguished road
Send a message via MSN to AllanY
Default Re: Clasificaci˛n de aceites

yo tengo un amigo q le hecha su verdadero aceite texaco a su 3L y esta golpiando los 400 mil kms y el motor ta como si nada....
la diferencia del sintetico y el normal es que el syn la viscosidad aguanta mucho mas calor el que el convencional, lo q tambien quiere decir q cuando se calienta pierde menos viscosidad q un aceite normal ya se en calor extremo y en arranque en frio, el desarrollo del aceite sintetico tomo alrededor de 91 an;ios, tambien aguanta mas las temperaturas antes de quemarse /oil burning/, hay un par de vainas mas q no me acuerdo.
ovbiamente cuesta mas pero vale la pena y si no hay pal sintetico un syntec blend no estaria mal q es aceite normal y sintetico mezclado.
hay en repuestos 89 en juan diaz venden uno de marca mystik q es rojo 80-90 y 140 gl6+ super premiun a 6 dola el cuarto.

ahora si consigues un pacto social le compras los aceites sinteticos en tanques a feduro q sale mucho mas barato
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 08:09 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
4x4 Panama.comAd Management by RedTyger
2007-2008 by Club 4x4 Panama - All Rights Reserved