Jake Posted July 27, 2005 Share Posted July 27, 2005 I used to run my car on Mobile One fully synth oil. I always averaged about 18mpg. I had my oil changed a couple of weeks ago but this time it was refilled with 'Royal Purple' oil. I'm now averaging 21.49 Miles per Gallon (288 miles from 60.82 Litres at last fill-up) Can a different oil really be responsible for such a difference in fuel economy? I've never managed 20mpg from a tankful before.The car is being used for the same commute each day and nothing else has been changed. Also the car now doesn't smoke in the mornings like it used to. It's needed the valve stem seals doing for the last 25,000 miles but suddenly it's stopped smoking. Seems to good to be true. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 27, 2005 Share Posted July 27, 2005 [hijack] I guess your car is fixed now Jake? Last time I heard you had major engine problems. Quote Link to comment Share on other sites More sharing options...
Jake Posted July 27, 2005 Author Share Posted July 27, 2005 No mate, the white one is not fixed yet. This is the grey one I'm on about in this thread. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 27, 2005 Share Posted July 27, 2005 Ah, sorry to hear that mate. [hijack over] Quote Link to comment Share on other sites More sharing options...
Alex Posted July 27, 2005 Share Posted July 27, 2005 If less oil is getting into the the breather system (because it's not as thin as the other stuff) then maybe less oil is contaminating the burn? Which grade of Mobil1 were you using?? The 0w stuff seems to get passed the seals easier than most... Quote Link to comment Share on other sites More sharing options...
Jake Posted July 27, 2005 Author Share Posted July 27, 2005 I've tried 0W40 and 5W40, they both seemed to smoke about the same amount on a cold start. Nothing too bad really but it's still nice that it's stopped. Quote Link to comment Share on other sites More sharing options...
Alex Posted July 27, 2005 Share Posted July 27, 2005 The RP is a 10w40 equiv. I believe Quote Link to comment Share on other sites More sharing options...
penguin Posted July 27, 2005 Share Posted July 27, 2005 i've been using castrol gtx magnetec 10w40 .... car about to hit the 100000mile barrier.... switch to royal purple? Quote Link to comment Share on other sites More sharing options...
Ben-san Posted July 27, 2005 Share Posted July 27, 2005 Can a different oil really be responsible for such a difference in fuel economy? I've just swapped out from a mineral oil to Royal Purple R41 (10W-40W) and I'm just starting to guage the difference. I'm getting better fuel economy too... but you should have seen the state of my old oil Keep recording your mpg m8, I'm all urban miles so I'll post up on the results of the next tank for all our sakes. B Quote Link to comment Share on other sites More sharing options...
Alex Posted July 27, 2005 Share Posted July 27, 2005 You were using MINERAL OIL?? Fully Synthetic only! 50 lashes for you m'boy! Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 You were using MINERAL OIL?? Fully Synthetic only! 50 lashes for you m'boy! Totally agree Poor car Quote Link to comment Share on other sites More sharing options...
Ben-san Posted July 27, 2005 Share Posted July 27, 2005 You were using MINERAL OIL?? 50 lashes for you m'boy! oww oww oww ow ow ow oww oww oww ow ow ow Oww ow ow ow ow ow ow ow oww oww ow ow ow ow oww oow oow oow oow oow ooww ow ow oww ow owo ww ow ow ow ow ow ow oww ow oww OOW Fully Synthetic only! I know... at least I assume it was by the state of it. I don't know what her PREVIOUS guardian was using, so the only way to be sure was to spend £££ on a good new filter and RP41. Might have been some of that semi-synth stuff. In any case, BLACK is not a good colour at all... Penguin... if I'm not mistaken, magnetec is great stuff but not fully synth. I might be wrong though... Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 Penguin... if I'm not mistaken, magnetec is great stuff but not fully synth. I might be wrong though... Its a semi syn AFAIK I read somewhere (maybe solkolene site) that any mineral oil that has been modified or added to is classed as synthetic according to a ruling by some American court. Its been a while so I might be wrong. Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 Oh I only counted 49 ows, well one was a ww so maybe 48 Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 but there is an o after an ow before the ww so I'll assume typo!! lol Quote Link to comment Share on other sites More sharing options...
Ben-san Posted July 27, 2005 Share Posted July 27, 2005 LOL I just cracked up at work LOL - I knew someone would count it... I'm not doing two more oww's because I don't deserve it My poor supe... I read the same thing on the Sylkolene webby too, there's truth in it, but then they would say these things wouldn't they? I must say RP seems to be great stuff, Arghjae had his changed the same day, replaced the plugs too so he might get a good increase in mpg too. We'll shall see. Quote Link to comment Share on other sites More sharing options...
ivan Posted July 27, 2005 Share Posted July 27, 2005 I always used to use Mobil1 0W40 fully synth in my MX6 on recommendation by almost everyone on the MX6 site. I could not get rid of the HLA tapping, no matter how many flushes and oil changes I did. And it smoked like a chimney on startup. Sold the MX6 when I upped to the Supra and found out last weekend that the new owner carried out 1 oil and filter change using a heavier Castrol semi-synth. The HLA noise went within 5 miles and the smoking has stopped. So yes - changing the oil type does make a difference. And as it can make such a difference to the oil burning and engine noise I wouldn't be at all surprised if it also leads to better fuel consumption. Cheers Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 I counted it once then posted and then realised what if I have counted it wrong! So I counted it 5 more times just to make sure. Obsiously too much time on my hands in work As for the oil, solkolene is pretty good stuff - havent had the privelege of PR as yet but maybe once I get my soop I will give it a whirl. Quote Link to comment Share on other sites More sharing options...
Guest chiefvinso Posted July 27, 2005 Share Posted July 27, 2005 I always used to use Mobil1 0W40 fully synth in my MX6 on recommendation by almost everyone on the MX6 site. I could not get rid of the HLA tapping, no matter how many flushes and oil changes I did. And it smoked like a chimney on startup. Sold the MX6 when I upped to the Supra and found out last weekend that the new owner carried out 1 oil and filter change using a heavier Castrol semi-synth. The HLA noise went within 5 miles and the smoking has stopped. So yes - changing the oil type does make a difference. And as it can make such a difference to the oil burning and engine noise I wouldn't be at all surprised if it also leads to better fuel consumption. Cheers a 0w oil is really thin which is why you were getting that tapping noise probably and oil gets thinner as it gets warmer which probably meant it went down the valve stems when you turned off and then on start up in the morning the oild got burnt off. Quote Link to comment Share on other sites More sharing options...
Animal Posted July 27, 2005 Share Posted July 27, 2005 I've been using Royal Purple for about 5 years now in every car/bike that I've had and I can't recommend the stuff higher. I've seen roughly an extra 50-70km fuel range straight away, gear changes have been smoother, power delivery slightly better (although this has been hard to tell in the Supe as I replaced all the fluids almost immediately). Where did you get it from? AFAIK Millennium Motorsports in Cornwall are the only suppliers in the UK. Quote Link to comment Share on other sites More sharing options...
Ben-san Posted July 27, 2005 Share Posted July 27, 2005 Where did you get it from? AFAIK Millennium Motorsports in Cornwall are the only suppliers in the UK. Got my fill from Paul K @ Max-GT near Basingstoke. Great service. Pricey stuff but well worth it for in terms of longer life I would have thought that Olpie would do some... Quote Link to comment Share on other sites More sharing options...
Jake Posted July 27, 2005 Author Share Posted July 27, 2005 Where did you get it from? AFAIK Millennium Motorsports in Cornwall are the only suppliers in the UK.It was a freebie from Max GT Quote Link to comment Share on other sites More sharing options...
Animal Posted July 27, 2005 Share Posted July 27, 2005 Cool. It is a bit dear, but IMO well worth it for the gains it provides. I'm glad someone else has seen the benefits - you wouldn't believe the arguments I've had on past forums with folk who just won't believe oils actually help performance. Quote Link to comment Share on other sites More sharing options...
Aerotop Dave Posted July 27, 2005 Share Posted July 27, 2005 Well if a bloomin' oil change can get rid of the smokey startups then let's go buy some. Next service (Oct) this is going in Quote Link to comment Share on other sites More sharing options...
Bob Posted July 27, 2005 Share Posted July 27, 2005 Hey guys, not sure if this will help, but there was a very helpful chap over on celica-club not long ago, posted some interesting info: http://www.celica-club.co.uk/cgibin/phpbb2/viewtopic.php?t=29407 Unfortunately, some of his other posts were lost when the board was hacked Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.