Thoughts on oil weight/viscosity
Thoughts on oil weight/viscosity
What are your opinions on using a slightly heavier oil in a higher mileage car ?
Mine has over 180,000 km on it but ,so far, does not burn or otherwise use up oil. It used to be common practice to use heavier oil in older cars to help keep oil pressure up etc. I was thinking of moving to 10w30 instead of 5w30
I am not concerned at all about a possible minor loss of fuel economy.
Mine has over 180,000 km on it but ,so far, does not burn or otherwise use up oil. It used to be common practice to use heavier oil in older cars to help keep oil pressure up etc. I was thinking of moving to 10w30 instead of 5w30
I am not concerned at all about a possible minor loss of fuel economy.
Last edited by GGG; Feb 26, 2018 at 08:57 AM. Reason: Correct 5w20 to 5w30 - see post #11
Veteran Member
Joined: Apr 2014
Posts: 4,785
Likes: 2,997
From: Jersey, Channel Islands
Barry,
If your motor isn't using oil and you have no other issues, then carry on doing what you're doing.
If you are concerned about the oil pressure, then you can hook up/tee off a 'real' oil pressure gauge, or - if you don't have NAV - then invest in WhiteXKR's 'RealGauge'
Just my
Chill, Mikey
If your motor isn't using oil and you have no other issues, then carry on doing what you're doing.
If you are concerned about the oil pressure, then you can hook up/tee off a 'real' oil pressure gauge, or - if you don't have NAV - then invest in WhiteXKR's 'RealGauge'
Just my
Chill, Mikey
I have purchased a Real Gauge kit , just have not got round to installing it yet. My old Cooper S used 20w50 so 5w20 seems "mighty thin" 
Thanks for all the input. I expect I'll stick with the 5w20
Thanks for all the input. I expect I'll stick with the 5w20
Veteran Member
Joined: Jan 2018
Posts: 3,694
Likes: 2,295
From: on the road in NE Oklahoma
Mobil 1 0w-40 .... an excellent oil for high performance european vehicles, superb wear protection
https://mobiloil.com/~/media/amer/us...pecs-guide.pdf
your car has about 110,000 miles on it. That's not a high mileage car, it's barely broken in.
Z
https://mobiloil.com/~/media/amer/us...pecs-guide.pdf
What are your opinions on using a slightly heavier oil in a higher mileage car ?
Mine has over 180,000 km on it but ,so far, does not burn or otherwise use up oil. It used to be common practice to use heavier oil in older cars to help keep oil pressure up etc........"
Mine has over 180,000 km on it but ,so far, does not burn or otherwise use up oil. It used to be common practice to use heavier oil in older cars to help keep oil pressure up etc........"
Z
Last edited by zray; Feb 25, 2018 at 11:23 PM.
Trending Topics
Joined: Dec 2011
Posts: 120,439
Likes: 17,005
From: Durham, UK
What decided you against using the recommended 5W-30 oil specification up until now?
(click on the image to enlarge it)
Other than Jaguar having a commercial arrangment with Castrol and therefore recommending their products, I can see no bias in the recommended oil specification or any reason to vary from it.
Graham
(click on the image to enlarge it)
Other than Jaguar having a commercial arrangment with Castrol and therefore recommending their products, I can see no bias in the recommended oil specification or any reason to vary from it.
Graham
Veteran Member
Joined: Jan 2018
Posts: 3,694
Likes: 2,295
From: on the road in NE Oklahoma
"......What decided you against using the recommended 5W-30 oil specification up until now? ...."
"........ than Jaguar having a commercial arrangment with Castrol and therefore recommending their products, I can see no bias in the recommended oil specification or any reason to vary from it.
Graham
"........ than Jaguar having a commercial arrangment with Castrol and therefore recommending their products, I can see no bias in the recommended oil specification or any reason to vary from it.
Graham
but as everyone has already noted, these best oils threads are mainly redundant. However, they do serve to illustrate the numerous oils that can be used successfully.
And it bears pointing out that having ones preferred oil analyzed during the oil change is the best way to determine how effective it still might be, and which parts of the additive package have been used up.
Z.
Last edited by zray; Feb 26, 2018 at 08:55 AM. Reason: Typo, corrected to 5w-30
Joined: Dec 2011
Posts: 120,439
Likes: 17,005
From: Durham, UK
I've edited your original post.
Many members read the first post in a thread and ignore all the rest before replying.
Graham
Many members read the first post in a thread and ignore all the rest before replying.
Graham
Joined: Oct 2009
Posts: 11,057
Likes: 2,271
From: Perth Ontario Canada
Joined: Oct 2009
Posts: 11,057
Likes: 2,271
From: Perth Ontario Canada
You either don't understand oil ratings or the Newfoundland climate, or both.
10W40 is not on the list at all, nor is the mandatory use of synthetic. Factory fill and dealers used dino oil for N. Am delivered cars
10W40 is not on the list at all, nor is the mandatory use of synthetic. Factory fill and dealers used dino oil for N. Am delivered cars
Last edited by Mikey; Feb 26, 2018 at 01:54 PM.
Veteran Member
Joined: Jan 2018
Posts: 3,694
Likes: 2,295
From: on the road in NE Oklahoma
Just my opinion, but anyone using a non synthetic today, even in a lawn mower, just doesn't care much about engine longevity.
Z
PS who's talking about 10w-40 ? did I miss that ? I did have a typo 4 posts back, ( wrote 10w-30 but meant 5w-30) but corrected, post haste, and noted correction .
I mentioned 0w-40, because that's what I use, and it's listed in my manual as appropriate for my climate
Last edited by zray; Feb 26, 2018 at 02:21 PM. Reason: clarification
Veteran Member
Joined: Jan 2018
Posts: 3,694
Likes: 2,295
From: on the road in NE Oklahoma
ha ha. A good one.
according to my 2002 Vehicle Care manual section 3-7, if the lows are in the 50 (F) range and the highs are in the 100's (F) or higher, then recommended oils are the 0w-40 on the low end of that range and a 5w-40 for the upper range.
again, those are the manuals recommendations, so don't hate me or question my geography skills.
Z
according to my 2002 Vehicle Care manual section 3-7, if the lows are in the 50 (F) range and the highs are in the 100's (F) or higher, then recommended oils are the 0w-40 on the low end of that range and a 5w-40 for the upper range.
again, those are the manuals recommendations, so don't hate me or question my geography skills.
Z
Joined: Oct 2009
Posts: 11,057
Likes: 2,271
From: Perth Ontario Canada
My tired old eyes saw Mobil 10w40 in your posts and not Mobil 1 10w40. Apologies offered.
