Spike 171 Posted April 18, 2020 Share Posted April 18, 2020 What do folks use? Pro's and cons? Link to post
Spindizzy 7,109 Posted April 18, 2020 Share Posted April 18, 2020 DCT use the 30, helps apparently. Manual the 40 its cheaper and in spec for the bike based on the workshop manual. Unless you ride in sub zero temps it's fine. Dealers use 40. 1 Link to post
Dunnster 1,650 Posted April 18, 2020 Share Posted April 18, 2020 I use castrol 10/30 or castrol 10/40 or a 50/50 mix of the two. Not noticed any difference with either but I ride a manual NC. I think the DCT is bit particular about oil grade and prefers 10/30. Link to post
Spike 171 Posted April 19, 2020 Author Share Posted April 19, 2020 So if you mix the two together (10/40 and 10/30) do you get a 10/35?! 1 Link to post
Dunnster 1,650 Posted April 19, 2020 Share Posted April 19, 2020 58 minutes ago, Spike said: So if you mix the two together (10/40 and 10/30) do you get a 10/35?! Yeah, pretty much Link to post
wjvh 999 Posted April 19, 2020 Share Posted April 19, 2020 1. Whatever you have in the garage, including a blend if need be and don’t worry about mixing brands 2. Or, if not #1, then buy the cheapest of whatever brand you’re happy with 😉 Link to post
MatBin 5,080 Posted April 22, 2020 Share Posted April 22, 2020 Although I believe it's a good idea to get bike oil rather than car oil, some of the additives aren't bike friendly or so I have read. Link to post
wjvh 999 Posted April 22, 2020 Share Posted April 22, 2020 30 minutes ago, MatBin said: Although I believe it's a good idea to get bike oil rather than car oil, some of the additives aren't bike friendly or so I have read. Absolutely correct, goes without saying 👍 Link to post
Pete Crowther 83 Posted May 19, 2020 Share Posted May 19, 2020 Must be a specific MC grade oil. If it doesn't have MC in the product code it is not suitable for wet clutch engines. 1 Link to post
fj_stuart 4,741 Posted May 19, 2020 Share Posted May 19, 2020 56 minutes ago, Pete Crowther said: Must be a specific MC grade oil. If it doesn't have MC in the product code it is not suitable for wet clutch engines. That’s not my experience. I usually use a fully synthetic motorcycle-specific oil but not always. I have a couple of high mileage bikes that have developed a thirst for oil – a CBF250 & FJ1200 with 185,000 miles between them. It seems a waste using expensive oil that isn’t going to be in there that long. For them I use Viscol synthetic from Home Bargains. It says “suitable for all petrol engines” but I think they means cars. I have no clutch slip issues and the FJ’s grunt would surely slip a clutch if it could. 1 Link to post
Pete Crowther 83 Posted May 19, 2020 Share Posted May 19, 2020 Non MC oils may be OK, depends on friction modifiers in the particular oil spec. MC spec oils are certain to be right. Link to post
Griff 1,556 Posted May 19, 2020 Share Posted May 19, 2020 I have always used a Motorcycle specif 10/40 semi synthetic. Link to post
Tonyj 6,907 Posted May 19, 2020 Share Posted May 19, 2020 On 19/04/2020 at 17:25, Spike said: So if you mix the two together (10/40 and 10/30) do you get a 10/35?! think its more 25/11 Link to post
DCTPaul 629 Posted May 19, 2020 Share Posted May 19, 2020 Most bikes n scoots i used to use Halfords 5w40 Fully Synthetic... especially in the winter months... Made by Comma - who also make Castrol... For the NC DCT i will use Castrol 10w30 Fully Synthetic, and the same in the new SH... I have a halfords trade card... so 20% off helps... 1 Link to post
Griff 1,556 Posted May 20, 2020 Share Posted May 20, 2020 13 hours ago, DCTPaul said: For the NC DCT i will use Castrol 10w30 Fully Synthetic, and the same in the new SH... I mentioned the possibility of using fully synthetic to the Honda importers here and they were having none of it. No idea what their issue is. Anyway I have always only ever used a Semi 10/40 without issue. I once used the full synthetic version on my former 1200 Explorer thinking that it would considerably extend my oil change periods. Wrong. The Triumph hydraulic camchain tensioner had a habit of making itself heard on startup whenever the oil viscosity was going off. The Full synthetic oil only pushed that out by about 1000kms. Link to post
Tex 36,816 Posted May 20, 2020 Share Posted May 20, 2020 14 hours ago, DCTPaul said: Most bikes n scoots i used to use Halfords 5w40 Fully Synthetic... especially in the winter months... Made by Comma - who also make Castrol... For the NC DCT i will use Castrol 10w30 Fully Synthetic, and the same in the new SH... I have a halfords trade card... so 20% off helps... Comma make Castrol?! I would need to see evidence of that one. Link to post
DCTPaul 629 Posted May 20, 2020 Share Posted May 20, 2020 Sorry... Comma make Castrol... Link to post
Tex 36,816 Posted May 20, 2020 Share Posted May 20, 2020 As far as I can see the two brands are entirely independent. Castrol is owned by BP and Comma is owned a Brazilian outfit called Moove. Both have their own production plants. Link to post
DCTPaul 629 Posted May 28, 2020 Share Posted May 28, 2020 (edited) Arsed it up... twice Comma make the Halfords oil... Comma listed on the Halfords Data Sheet... Just checked my NC750X DCT 600m service invoice from Doh!-bles... (Due to my lockdown induced nagging thoughts following my previous arse up) Honda 10w30 Bulk Oil 08232M99S6LHE 208L - FULLY SYN... 3.40 Lt @ £9.992... £33.97 Plus the filters, sundries, biscuits, Vodka And Tonic... Edited May 28, 2020 by DCTPaul 1 Link to post
Tex 36,816 Posted May 28, 2020 Share Posted May 28, 2020 1 hour ago, DCTPaul said: Arsed it up... twice Comma make the Halfords oil... Ahh, indeed they do. Interestingly, before Comma made it Castrol used to! Link to post
tw586 88 Posted May 30, 2020 Share Posted May 30, 2020 use either as long as is not synthetic Link to post
SteveThackery 3,090 Posted June 3, 2020 Share Posted June 3, 2020 On 5/30/2020 at 10:32, tw586 said: use either as long as is not synthetic 1/ What's wrong with synthetic? 2/ And no, don't use either. Open the owner's handbook. Read the oil specs. Buy oil that matches the specs. Install in the engine. There is no room for "opinion" here: Honda knows best, every time. 1 Link to post
Griff 1,556 Posted June 3, 2020 Share Posted June 3, 2020 24 minutes ago, SteveThackery said: 1/ What's wrong with synthetic? Imho its not all its whacked up to be. At least that is the opinion of my former Triumph Explorer 1 Link to post
Andy m 23,473 Posted June 3, 2020 Share Posted June 3, 2020 (edited) Synthetic is just pointless and expensive in normal engines. The race stuff about preventing it running in and then preventing it wearing out is going to be correct to some degree, but I don't really care if the ninth owner only gets to 69696 miles rather than 89988. Most vehicle oil if tested will be nothing like worn out. The bits of metal in it and petrol absorbed will be nothing like the limit because Honda has to account for the 98th percentile user who delivers pizza round the steel works in Azerbaijan. Changing from an oil 60% worn to one that'll never get past 50 is literally money down the drain. As for the ones changing oil at half the distance, Helicoil loves you, the planet doesn't. I'm totally in the do what Honda says, use an oil brand you know and read the label camp. Andy Edited June 3, 2020 by Andy m 4 Link to post
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