| Author | Message | ||
     D. Howell (Blackandtan) Member Username: Blackandtan Post Number: 85 Registered: 04-2003 |
I see this at www.mobil1.com for a '96 Disco. (Mine's in Southern California with hot summers and mild winters - doing mostly city/highway driving, no towing, some minor oil leaks that I don't want to encourage.) It sounds like for my criteria of (largely at least) above 32 degrees Fahrenheit and below 122 degrees, Mobil 1 suggests Mobil 1® with SuperSyn™ 0W-40, in place of the manufacturer-recommended 5w-40, or Mobil 1® with SuperSyn™ 10W-30 or 15W-50 with confidence, in place of manufacturer-recommended 20w-40. Here's their list: 10W-60 Above -4° F Mobil does not carry that specific viscosity. While it is always wise to check with your vehicle's manufacturer, you can use Mobil 1® with SuperSyn™ 15W-50 with confidence. 15W-40 Above 14° F Mobil does not carry that specific viscosity. While it is always wise to check with your vehicle's manufacturer, you can use Mobil 1® with SuperSyn™ 0W-40 or 15W-50 with confidence. 20W-40 Above 32° F Mobil does not carry that specific viscosity. While it is always wise to check with your vehicle's manufacturer, you can use Mobil 1® with SuperSyn™ 10W-30 or 15W-50 with confidence. 5W-20 Below 14° F Although this viscosity is not available in Mobil 1®, you can use Mobil 1® with SuperSyn™ 0W-20 with confidence. 5W-20 is available in Mobil Drive Clean Oil™. It is always wise to check with your vehicle's manufacturer for viscosity grade recommendations. 5W-30 Below 95° F You can use Mobil 1® with SuperSyn™ 5W-30 with confidence. This viscosity is also available in Mobil Drive Clean Oil™ and Mobil Drive Clean Plus™ – both the Newer Vehicle and High Mileage formulas. 5W-40 Below 122° F Mobil does not carry that specific viscosity. While it is always wise to check with your vehicle's manufacturer, you can use Mobil 1® with SuperSyn™ 0W-40 with confidence. | ||
| D. Howell (Blackandtan) Member Username: Blackandtan Post Number: 88 Registered: 04-2003 |
I see further that they say: Mobil 1 with SuperSyn™ is available in five viscosity grades: Mobil 1 with SuperSyn™ 10W-30 – Higher-Mileage Vehicle Formula Mobil 1 with SuperSyn™ 5W-30 – Newer Vehicle Formula Mobil 1 with SuperSyn™ 15W-50 – Performance Driving Formula Mobil 1 with SuperSyn™ 0W-30 – Enhanced Fuel Economy Formula Mobil 1 with SuperSyn™ 0W-40 – European Car Formula (Also, any real reason not to use Mobil1 to top off existing non-synthetic oil before doing outright oil changes? The site claims they're compatible.) | ||
| June H. Han (Junehhan) Member Username: Junehhan Post Number: 55 Registered: 04-2003 |
I would be very nervous using such a thick oil like the 15w50 in any climate north of the equator. I know several people here run Mobil 1 15w50 in thier D1's, but I personally wouldn't be comfortable. During a cold start, it would take so long to properly lubricate all of the vital components. Mobil 1 0w40 sounds like a nice compromise as it would flow very quickly during cold starts, and cold weather while providing adequate protection like a 40 weight during hot weather along with severe usage. I've got my first oil change coming up in my 03 disco, and I plan on running Amsoil 10w40 since it appears like that's what is recommended by the manual. As far as using Mobil 1 to top off your engine oil goes, there will not be a problem at all. | ||
| Erik G. Burrows (Erik) Senior Member Username: Erik Post Number: 258 Registered: 04-2002 |
I agree with June, I tried the 15w50 for a few thousand miles, but it just 'felt' too thick to me. Cold starts were harder, and it just felt a little more sluggish. I'm very happy with Mobile 1 10w30. | ||
| D. Howell (Blackandtan) Member Username: Blackandtan Post Number: 90 Registered: 04-2003 |
Thanks - good points. Any reason really to choose Amsoil over Mobil1 or vice versa? | ||
| June H. Han (Junehhan) Member Username: Junehhan Post Number: 62 Registered: 04-2003 |
Well, i'm going to be honest and tell you that my opinion is biased since I am an Amsoil dealer. Of course, I havn't sold Amsoil to anyone else other than myself in a year........ Amsoil and Mobil 1 really don't compare with each other. Mobil 1 is definately the best of the main tier synthetic lubricants, while Amsoil competes with the high end premium synthetics such as Royal Purple, Redline, and other such lubricants. As you would expect, Amsoil according to the independant tests that have been done outperforms Mobil 1 and the competition by a significant margin. Of course, these premium tier synthetics also cost more as you probably would expect of them. You can read more under product information at http://www.amsoil.com and view some of the independant test scores that are shown as well. Amsoil ranks as one of the best, and performs as you would expect. Amsoil's biggest advantage is that their lubricants are formulated for extended drain intervals as well, although you won't see me going much farther than the factory intervals. | ||
| Shawn McKenzie (Shawn) Member Username: Shawn Post Number: 96 Registered: 10-2002 |
I run 5W-50 full synthetic year round here in Canada. Starts nice at -38F in winter and works fine at 100F in summer. I didn't see it in your list, I don't know if Mobil 1 only sells that oil here? | ||
| Shaun Power (Shaunp) Member Username: Shaunp Post Number: 123 Registered: 05-2003 |
You blokes use thin oil over there in the US. I'm in Brisbane Australia and wouldn't run anything thinner than 15w-50 in the cars I work on. I run my own car on Penrite Pedigree 15w-60 semi synth and most others on Penrite HPR30 which is 20w60. Normal temp in Brisbane I reckon would be the same as California. The temp range here is 5 deg C to High 30s deg c. Cars run fine and start easy. I also run one of their race oils in the transfer cases 10/10ths Synthetic 75w90. For the diffs I run Castrol SAF-XA synth 75w140. Castrol also make a synth that work well in the transfer box called SynTrax. www.penrite.com.au | ||
| George Collins (Zinhead) New Member Username: Zinhead Post Number: 14 Registered: 12-2001 |
If you are interested in Mobil One, "Mobil 1 with SuperSyn™ 0W-40 – European Car Formula" is supposedly the only viscocity that uses a full synthetic base stock. The rest use dino juice as part of the base stock. I use 10W-30 most of the year, and switch to 0W-30 for the winter months. I will probably change over to 0W-40 when it becomes more available. Here is a synthetic oil story. I switched over to Mobil 1 in my 97 Disco after the initial break-in. No problems, no issues. About a year ago, I lent the truck to my father who lives 1,300 miles away. I picked it up a few months ago, and he had changed all the fluids for my cross country trip. He told me used some Wal-Mart dino motor oil (he is a CB). I didn't think much of it at the time. On the long drive home, the engine was considerably noisier, especially on long grades. Thinking it was a bad tank of gas, I put in a bottle of octane boost but the noise kept up. Everything worked fine, so I just forgot about the increased mechanical noise, thinking my memory was bad about how the Rover worked. A few weeks later, I changed the oil using Mobil 1 10W-30. Bingo, all the excessive engine noise dissapeared. | ||
| eric johnson (Eric2) Member Username: Eric2 Post Number: 76 Registered: 05-2003 |
Does everyone named Shaun, Sean or Shawn use XXw-50 or thicker? The thicker oil is made for older engines, and I mean older - 50's and 60's - they had looser tolerances in the bearings so they wouldn't spin them at higher rev's. Those engines had high volume, high pressure pumps and ran thicker oil to take up bearing tolerance. The Rover 2.25 4 cyl recommended 20-50. It was almost unchanged since the late 50's. It had roots in what, the '30's?? The Series gearbox did too, which is one reason why it can't take any power upgrade for long. Even though the Rover V-8 engine is based on the old Buick 215, it has been upgraded in these areas and is considered a "modern" engine with tighter tolerances. It does not require a high viscosity oil, unless you are an SAS or Ranger unit running around Iraq chasing down Saddam where the temp. is 90 degrees F and above. A 10w-40 is more than adequate and 10-30 works fine. | ||
| Leslie N. Bright (Leslie) Dweb Lounge Member Username: Leslie Post Number: 2440 Registered: 02-2002 |
George, "Mobil 1 with SuperSyn™ 0W-40 – European Car Formula" is supposedly the only viscocity that uses a full synthetic base stock. The rest use dino juice as part of the base stock. So, where do you think the stuff that they synthesize the full-synthetic base stock, comes from? It ALL starts from dino-juice....... -L | ||
| D. Howell (Blackandtan) Member Username: Blackandtan Post Number: 95 Registered: 04-2003 |
>Even though the Rover V-8 engine is based on the old Buick 215, it has been upgraded in these areas and is considered a "modern" engine with tighter tolerances. It does not require a high viscosity oil, unless you are an SAS or Ranger unit running around Iraq chasing down Saddam where the temp. is 90 degrees F and above. < This is roughly equivalent to shopping in the Valley on a Saturday in summer. | ||
| June H. Han (Junehhan) Member Username: Junehhan Post Number: 67 Registered: 04-2003 |
Mobil 1 uses PolyAlphaOlefins(PAO's) as their basestock in their synthetic oils, blended with various additives and so on. PAO's are 100% synthetic and are not just regular petroleum particles that have been chopped and hacked and modified. Castrol Syntec and other similar oils that claim to be 100% synthetic in reality do not use a synthetic base at all. These oils generally use a highly refined hydrocracked Group III base oil to make it perform like a synthetic. I assure you, Mobil 1 is fully synthetic unlike some of their competitors. | ||
| Leslie N. Bright (Leslie) Dweb Lounge Member Username: Leslie Post Number: 2445 Registered: 02-2002 |
June, I wholly agree that they don't just cut down existing particles. But look at how PAOs are made, they start with ethylene and then build up the PAO molecules. Where do they get the ethylene? -L | ||
| June H. Han (Junehhan) Member Username: Junehhan Post Number: 71 Registered: 04-2003 |
Leslie, you have a very good point. My point was that at least with it having a PAO basestock, Mobil didn't take the wussy way out by hacking and chopping up a bunch of particles like other competitors do. I enjoy that some synthetic oils out there are still composed of a synthetic base stock. Of course, we've got different basestocks out there as well as I believe Redline is composed of a poly-ether base stock instead of using PAO's. | ||
| Shaun Power (Shaunp) Member Username: Shaunp Post Number: 129 Registered: 05-2003 |
>Even though the Rover V-8 engine is based on the old Buick 215, it has been upgraded in these areas and is considered a "modern" engine with tighter tolerances. It does not require a high viscosity oil, unless you are an SAS or Ranger unit running around Iraq chasing down Saddam where the temp. is 90 degrees F and above. < It's not hard to get over 90-100deg f in the shade in summer in Northern and central Australia I guess that's why we use thicker oils. Even 10w50 is specified for 2003 v8 cars. In fact many people don't even run anti freeze here just straight corrosion inhibitor. My factory shop manual says xxW-50 for anything over 35deg C and thats an average summer day in Brisbane, let alone if I go west or north or drag my camper a 60 mile up the beach, It don't snow here guys it gets real hot. | ||
| Chris Whybrew (Dcwhybrew) Member Username: Dcwhybrew Post Number: 68 Registered: 05-2003 |
D. Howell, I used Mobil 1 Supersyn 15w50 in my 96 disco. I think the engine runs just fine. By the way I live in Southern NV, FWIW. I did notice that my seepage virtually stopped after 2 or 3 oil changes. I only started using it in the summer, so I'm not sure how it'll do in the witner time, though winters here don't get much lower than 45-50 degrees. I'll probably switch to Supersyn 10w30 in the winter. Bottom line, I'd recommend it. | ||
| Chris Whybrew (Dcwhybrew) Member Username: Dcwhybrew Post Number: 69 Registered: 05-2003 |
Oh yeah I forgot, since I am in no way an expert on this subject I sent and email to John Robison at www.robisonservice.com. Apparently he's an expert on Rovers and on his web page he recommended Mobil 1 synthetics. So, I shot him an email asking for his advice, and I followed it. So far I've been happy with it. |
