Oil Consumption Issue
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Joined: Feb 2006
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From: Riyadh, Saudi Arabia
Oil Consumption Issue
Hi,
I'm running a 1999 5.9l D here in Saudi Arabia...
I've noticed that the D's oil consumption has increased...especially when it's being running hot in slow moving traffic...as opposed to after a long run.
lost about 1/4 of an inch off the dip stick in pretty short order after it ran hot last time...
checked the plugs and no sign of oil fouling. also got a flash light, took the air hat off and checked down the throttle body into the intake manifold...no evidence of oil pooling at the bottom...
no evidence of oil under the vehicle or obvious leak and the exhaust doesn't seem have too much carbon deposits
so question...how else can oil find its way out of the D...??
Chris
I'm running a 1999 5.9l D here in Saudi Arabia...
I've noticed that the D's oil consumption has increased...especially when it's being running hot in slow moving traffic...as opposed to after a long run.
lost about 1/4 of an inch off the dip stick in pretty short order after it ran hot last time...
checked the plugs and no sign of oil fouling. also got a flash light, took the air hat off and checked down the throttle body into the intake manifold...no evidence of oil pooling at the bottom...
no evidence of oil under the vehicle or obvious leak and the exhaust doesn't seem have too much carbon deposits
so question...how else can oil find its way out of the D...??
Chris
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Joined: Jun 2005
Posts: 14,228
Likes: 19
From: Riverton, UT
Hey Chris!
Besides doing the regular checks for problems this might be your problem. Over there things change with those temps. When it is THAT HOT the basics of oil consumption gain because as the VERY HOT engine and slow moving temps do a toll on the oil. As it heats to those temps it liquefies even more and can slowly move through the oil rings and through combustion rings to get into the cylinder at a slow pace but consistent and burn it causing not much build up on the plugs. This is noted on higher mileage motors because of ware and scratches on the cylinder walls from regular operating conditions.
There are two ways to deal with this problem. Definitely use Fully Synthetic oils!
Watch your oil and top off constantly or switch to a thicker oil. The problem with this is you need the additives of the 10-30W and the only one I can see so far is 10-40W. You could try it because of the temps and I run it in the hot summer months for about 1 change especially when towing because of loss of pressure due to the same phenomenon. Again make sure you are only running Full Synthetic oil only!
Remember that the 5.9L block has been running the same since 1962 so as this should not pose a problem. The down fall to using 10-40W also is the fact that it is being discontinued in newer cars because it wares out faster and decomposes faster.
Besides doing the regular checks for problems this might be your problem. Over there things change with those temps. When it is THAT HOT the basics of oil consumption gain because as the VERY HOT engine and slow moving temps do a toll on the oil. As it heats to those temps it liquefies even more and can slowly move through the oil rings and through combustion rings to get into the cylinder at a slow pace but consistent and burn it causing not much build up on the plugs. This is noted on higher mileage motors because of ware and scratches on the cylinder walls from regular operating conditions.
There are two ways to deal with this problem. Definitely use Fully Synthetic oils!
Watch your oil and top off constantly or switch to a thicker oil. The problem with this is you need the additives of the 10-30W and the only one I can see so far is 10-40W. You could try it because of the temps and I run it in the hot summer months for about 1 change especially when towing because of loss of pressure due to the same phenomenon. Again make sure you are only running Full Synthetic oil only!
Remember that the 5.9L block has been running the same since 1962 so as this should not pose a problem. The down fall to using 10-40W also is the fact that it is being discontinued in newer cars because it wares out faster and decomposes faster.