Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Oil - What weight do you use? (Please forgive me for asking...)

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

User avatar
Eddystone
Posts: 234
Joined: Mon Jan 20, 2014 4:30 pm
Year and Model: 1967 Ford GT40 Mk IV
Location: Philadelphia Metro Area
Has thanked: 11 times
Been thanked: 13 times
United States of America
Eddystone

Oil - What weight do you use? (Please forgive me for asking...)

Post by Eddystone » Thu Jul 25, 2019 1:04 pm

I noticed in some of Robert Spinner's videos that he might be using 10w40 in his cars. I know Robert lives in Arizona (?) and a heavier oil might be best there. I noticed on a old service record from the previous owner that 5w30 was put in my 1998 V70 non-turbo. I've been putting 10w30 in my two cars regardless of season, and I generally use full synthetic Mobil1 High Mileage (not extended mileage) which has the additives that may help aging seals. (Yes, I have read on the web that some people say that Mobil1 synthetic is now garbage, but who know what to believe...)

So, what's the consensus on using 10w30 in a car with 150k miles on the clock?

What do you use? (Not so much what you think everyone else should use; just what do you use...)


1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

User avatar
Rattnalle
Posts: 1448
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
Location: Sweden
Has thanked: 15 times
Been thanked: 101 times
Sweden
Rattnalle

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Rattnalle » Thu Jul 25, 2019 2:12 pm

10w30 won't be an actual synthetic oil whatever the label says. It'll be a blend.

The winter weight is really only important when cold starting if it's freezing. 10w is ok down to -10C or so. Colder and you want lighter.

The operating weight is more important. The difference in actual oil temperature isn't that large during driving unless you're far out on either end of the scale. If it's hotter and you drive hard you might need a heavier weight such as 40. It won't do any harm if you're not driving hard though.

5w40 is a good general purpose weight that works in most climates and seasons and for most kinds of driving. It's what I stick to since it's cheap and covers everything I drive in. From -20 to +40 degrees C.
These users thanked the author Rattnalle for the post:
Eddystone



User avatar
amblerman
Posts: 197
Joined: Wed Jan 18, 2017 3:29 pm
Year and Model: 1999 s70
Location: Pennsylvania
Has thanked: 1 time
Been thanked: 13 times
United States of America
amblerman

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by amblerman » Thu Jul 25, 2019 2:23 pm

Hi Eddystone,

You and I are in the same neck of the woods . I've only owned my 1999 s70 non-turbo for about 2.5 years so far and here's what I've been doing.

when I first got it, I knew the oil was recently changed but not with what. I think I left that in for 3K before moving to 5K intervals (just easy for me ).

I think used the following oils for my changes.
Shell Rotella 5w-40
Mobil Super 10w-40 HM
Mobil1 5w-30 5qts
+ random top offs with different viscosity oils when I had some oil leaks. Those are pretty much gone at this point so I don't have to do that as much.

Next oil change will be Quaker State Ultimate Durability (their "synthetic") in 10w-30.

As you will note, I'm all over the place with viscosity and brands. Why do I do that? I happen to have a stockpile of oil that I picked up as various times on close out deals or mistakes in prices. (Like amazon accidentally pricing a case at price of a single).

So I use whatever xW-30 or xW-40 (and sometimes a mix!) I have in my basement. But that is just me.

Also, below is the viscosity chart for my s70 (probably same for your 98)
oilspec.png
As you can see, various xw-30 and 5-W40 are listed as ok.

One thing that does confuse me about the chart is why 5w-30 doesn't cover the same high temp range as 10w-30 since any xW-30 oil should behave approximately the same when hot (ie the 30 part in xW-30). Maybe that was valid with the oils they made back in late 90s vs today or due to how 5W-XX oils are blended vs 10W-XX. Not sure.

I can understand 5W-30 being called for at colder temps, but I don't quite understand why it cuts off at higher temps compared with 10W-30.

All the brands I use are easily found at auto parts stores or Walmart. I have used and will use oils from Mobil, Castrol, Valvoline, Pennzoil, QuakerState, etc. Most if not all of the oil I have and use is "synthetic" now. And yes, I put synthetic in quotes because it's not really synthetic.
I get that.

user June on this board has had great luck with Redline oil. That's a real synthetic and I'd love to run that but my wife would kick me out if I bought any more oil for my stockpile.

Mobil 1 definitely isn't garbage. But they have so many versions of Mobil 1 that it is true that some are better than others. On their site right now I count 14 different versions (not weights) of Mobil 1 (Mobil 1, Mobil 1 Extended Performance, Mobil 1 Annual Protection, etc)

I'd also say that some of their versions probably are nothing special compared to any other brand. However, for some weights, some versions of Mobil 1 contain a healthy portion of the true synthetic oils that makes June like Redline so much. It's tough to know the exact make up of the base oil stocks. On a web site I read, some people have paid for analysis reports done on virgin samples to try and figure out the exact makeup of what's in the bottle.



User avatar
Eddystone
Posts: 234
Joined: Mon Jan 20, 2014 4:30 pm
Year and Model: 1967 Ford GT40 Mk IV
Location: Philadelphia Metro Area
Has thanked: 11 times
Been thanked: 13 times
United States of America
Eddystone

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Eddystone » Thu Jul 25, 2019 2:35 pm

Rattnalle wrote:
Thu Jul 25, 2019 2:12 pm
10w30 won't be an actual synthetic oil whatever the label says. It'll be a blend.
Don't see how they can sell it as a full synthetic if it is not an actual synthetic. It is specified to be a blend, but a blend of synthetics.

Specifications and approvals

Mobil 1 High Mileage 10W-30 synthetic motor oil meets or exceeds the requirements of:

ACEA A3/B3
API SN Plus, SN, SM, SL

Mobil 1 High Mileage 10W-30 is of the following quality level:

API CF

Technical details
SAE Grade 10W-30
Viscosity (ASTM D445)
cSt @ 40ºC 78
cSt @ 100ºC 12.1
Viscosity Index 149
HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683) 3.5
Pour Point, ºC, (ASTM D97) -39
Flash Point, ºC, (ASTM D92) 232
Density @15.6ºC g/ml (ASTM D4052) 0.861


1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

User avatar
Rattnalle
Posts: 1448
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
Location: Sweden
Has thanked: 15 times
Been thanked: 101 times
Sweden
Rattnalle

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Rattnalle » Thu Jul 25, 2019 2:44 pm

Eddystone wrote:
Thu Jul 25, 2019 2:35 pm
Rattnalle wrote:
Thu Jul 25, 2019 2:12 pm
10w30 won't be an actual synthetic oil whatever the label says. It'll be a blend.
Don't see how they can sell it as a full synthetic if it is not an actual synthetic. It is specified to be a blend, but a blend of synthetics.

Specifications and approvals

Mobil 1 High Mileage 10W-30 synthetic motor oil meets or exceeds the requirements of:

ACEA A3/B3
API SN Plus, SN, SM, SL

Mobil 1 High Mileage 10W-30 is of the following quality level:

API CF

Technical details
SAE Grade 10W-30
Viscosity (ASTM D445)
cSt @ 40ºC 78
cSt @ 100ºC 12.1
Viscosity Index 149
HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683) 3.5
Pour Point, ºC, (ASTM D97) -39
Flash Point, ºC, (ASTM D92) 232
Density @15.6ºC g/ml (ASTM D4052) 0.861
They seem to be allowed to do exactly that in the US due to some old ruling on marketing. In Europe it'd be sold as a semi-synthetic.



User avatar
Eddystone
Posts: 234
Joined: Mon Jan 20, 2014 4:30 pm
Year and Model: 1967 Ford GT40 Mk IV
Location: Philadelphia Metro Area
Has thanked: 11 times
Been thanked: 13 times
United States of America
Eddystone

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Eddystone » Thu Jul 25, 2019 2:53 pm

Rattnalle wrote:
Thu Jul 25, 2019 2:44 pm
They seem to be allowed to do exactly that in the US due to some old ruling on marketing. In Europe it'd be sold as a semi-synthetic.
Well, we do have synthetic blends (dino + synthetic) on the shelves right next to the pricier full synthetics.

I've read numerous tedious oil threads over the years and have never once read that Mobil1 10w30 was not a full synthetic as advertised. Not saying you are incorrect, but I am surprised that I haven't seen that before.


1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

User avatar
Rattnalle
Posts: 1448
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
Location: Sweden
Has thanked: 15 times
Been thanked: 101 times
Sweden
Rattnalle

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Rattnalle » Thu Jul 25, 2019 3:00 pm

I'm sure June can find the source if she finds this.

I've never seen a 10w30 or 10w40 advertised as anything but a semi synthetic over here though. The synths are 5w or 0w.



User avatar
Eddystone
Posts: 234
Joined: Mon Jan 20, 2014 4:30 pm
Year and Model: 1967 Ford GT40 Mk IV
Location: Philadelphia Metro Area
Has thanked: 11 times
Been thanked: 13 times
United States of America
Eddystone

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Eddystone » Thu Jul 25, 2019 3:10 pm

Rattnalle wrote:
Thu Jul 25, 2019 2:44 pm
They seem to be allowed to do exactly that in the US due to some old ruling on marketing. In Europe it'd be sold as a semi-synthetic.
Here's the best explanation I can find for the distinction you are making between "full synthetic" and "true synthetic"

https://www.pca.org/news/2015-11-02/syn ... -motor-oil


1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

Chuck W
Posts: 170
Joined: Wed Dec 24, 2014 10:45 am
Year and Model: 97 854 T5
Location: Indianapolis, IN
Has thanked: 9 times
Been thanked: 13 times
United States of America
Chuck W

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by Chuck W » Thu Jul 25, 2019 4:09 pm

0W40 Castrol Edge Synthetic - Euro formula
Last edited by Chuck W on Thu Jul 25, 2019 4:25 pm, edited 1 time in total.



User avatar
amblerman
Posts: 197
Joined: Wed Jan 18, 2017 3:29 pm
Year and Model: 1999 s70
Location: Pennsylvania
Has thanked: 1 time
Been thanked: 13 times
United States of America
amblerman

Re: Oil - What weight do you use? (Please forgive me for asking...)

Post by amblerman » Thu Jul 25, 2019 4:20 pm

Rattnalle wrote:
Thu Jul 25, 2019 2:12 pm
10w30 won't be an actual synthetic oil whatever the label says. It'll be a blend.
I agree with this statement for the oils that are typically found in major stores (most/all "synthetic" oils in major stores are blends in my view), but there does seem to be some boutique brands making true synthetics in that viscosity.

For example.
https://www.redlineoil.com/10w30-motor-oil
They claim it's a "Full-synthetic ester formula for passenger cars, light trucks, performance vehicles and marine applications "

If it truly is a fully 100% ester formula (plus the anti-wear add packs of course) then it should be fully synthetic.

But like I said at the beginning, most/all 10w30 in typical parts stores will be a blend. (unless they also sell the boutique brands.

-A



Post Reply