Jaguar STR - oil disappeared
#1
Jaguar STR - oil disappeared
Hi
Is it normal for 4.2 SC that after about 6K kilometers, about 3 liters of oil disappeared from the engine? I do not have any leaks. The exhaust pipe does not smoke white. I do not smell burned oil in the exhaust. I took out one coil today and checked the spark plug - it is not soaked only a delicate bright coating. As I checked the oil level this morning, I turned pale - the dipstick was dry like a pepper. I added almost 3 liters of oil to the maximum level. I did not notice that the engine worked differently, louder, the oil pressure indicator was silent. I heard that SC engines can spit a lot of oil by crankcase ventilation, but somewhere this oil must eventually be burned? I changed the oil 5 months ago (5W30) and after 6K kilometers, 3 liters disappeared without a trace? I think that such a big loss in such a short time if it was burnt by the engine would probably be noticeable?
Is it normal for 4.2 SC that after about 6K kilometers, about 3 liters of oil disappeared from the engine? I do not have any leaks. The exhaust pipe does not smoke white. I do not smell burned oil in the exhaust. I took out one coil today and checked the spark plug - it is not soaked only a delicate bright coating. As I checked the oil level this morning, I turned pale - the dipstick was dry like a pepper. I added almost 3 liters of oil to the maximum level. I did not notice that the engine worked differently, louder, the oil pressure indicator was silent. I heard that SC engines can spit a lot of oil by crankcase ventilation, but somewhere this oil must eventually be burned? I changed the oil 5 months ago (5W30) and after 6K kilometers, 3 liters disappeared without a trace? I think that such a big loss in such a short time if it was burnt by the engine would probably be noticeable?
Last edited by AT_STR; 03-05-2019 at 11:52 AM.
#3
#4
Very strange...that is alot of oil to burn...did you check the exhaust pipe by sticking your finger and swiping inside...if it went through the combustion cycle, i i would think there would be slick residue not just soot
#6
#7
Join Date: Oct 2007
Location: PHX some of the time
Posts: 117,780
Received 6,354 Likes
on
5,532 Posts
Trending Topics
#8
I think i know what happened....if when you replaced the oil cooler o rings the oil in the lines and cooler probably drained out...the oil and filter change amount reflects draining the oil pan and filter...the oil cooler and lines stay full until disconnected....the amount to refill them would be about 3 liters i would guess....after you did your repairs, how much oil did you put in
#9
I think i know what happened....if when you replaced the oil cooler o rings the oil in the lines and cooler probably drained out...the oil and filter change amount reflects draining the oil pan and filter...the oil cooler and lines stay full until disconnected....the amount to refill them would be about 3 liters i would guess....after you did your repairs, how much oil did you put in
Does anyone know where the Crankcase Vent Valve tube is coming (from the passenger side valve cover) ? It disappears from the back of the engine near the bulkhead and I do not know where to go next?
#10
That's what I did - I added oil and I will watch because nothing else comes to mind.
This is not it - there is no chance that there would be up to 3L of oil. I poured 6.5L and it was half between MAX and MIN. Yesterday I poured into the MAX a total of 3.5L so the amount is correct.
Does anyone know where the Crankcase Vent Valve tube is coming (from the passenger side valve cover) ? It disappears from the back of the engine near the bulkhead and I do not know where to go next?
This is not it - there is no chance that there would be up to 3L of oil. I poured 6.5L and it was half between MAX and MIN. Yesterday I poured into the MAX a total of 3.5L so the amount is correct.
Does anyone know where the Crankcase Vent Valve tube is coming (from the passenger side valve cover) ? It disappears from the back of the engine near the bulkhead and I do not know where to go next?
Last edited by scottjh9; 03-06-2019 at 10:24 AM. Reason: Correction
#12
Join Date: Oct 2007
Location: PHX some of the time
Posts: 117,780
Received 6,354 Likes
on
5,532 Posts
#14
#15
Join Date: Jan 2012
Location: Newport Beach, California
Posts: 5,668
Received 2,677 Likes
on
1,837 Posts
Thread
Thread Starter
Forum
Replies
Last Post
oberthecat
S-Type / S type R Supercharged V8 ( X200 )
4
02-16-2014 04:16 PM
burmaz
XJ XJ8 / XJR ( X308 )
0
06-23-2011 02:38 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)