BMW R1200RT/R1250RT forum

BMW R 1200RT => BMW R 1200RT Maintenance => Topic started by: Our Gee on 2020-10-17 09:48:27

Title: Sorry, it's another Oil Thread !!
Post by: Our Gee on 2020-10-17 09:48:27
Just been idling time looking at the multitude of Oils available for the RT and a name turned up which I hadn't come across before. Westway Lubricants do a 15w-50 Semi Synthetic API SJ spec Engine Oil which is priced at £23.99 for 5 Litres. Does anyone have any experience of Westway Oils.
Thanks.
Title: Re: Sorry, it's another Oil Thread !!
Post by: Old-Git on 2020-10-17 11:13:12
No, but I'm gonna try this next service - https://www.smithandallan.com/products/transport-motorcycle/4556-smith-and-allan-limitless-ultra-4t-10w-40---fully-synthetic-motorcycle-oil/ (https://www.smithandallan.com/products/transport-motorcycle/4556-smith-and-allan-limitless-ultra-4t-10w-40---fully-synthetic-motorcycle-oil/) anyone tried it?
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-10-17 13:01:35
The Camhead is basically the same as a car engine, with a dry clutch & separate gearbox, therefore, fancy expensive motorcycle specific engine oils are not necessarily required.

The Rider's Manual recommends several viscosity ranges, 15W-40 or greater i.e. 50 is one of them. The quoted oil standards are API SF / ACEA A2, or better, no mention of JASO, presumably because it doesn't need a motorcycle specific engine oil.

"Car oils have been used up to 1998 as the base for most motorcycle oils. But as the technology in cars evolved, the oils were modified to meet those modern needs. As a result, additives were added and friction modifiers were blended with the oil. Although these modifications were positive for use in cars, they were damaging to motorcycles. This was especially the case with motorcycle gearboxes and clutches. Unlike with cars, motorcycles don’t use a separate oil for the gearbox, causing the clutches to slip due to the friction modifiers. It also could attribute to gearbox pitting (localised corrosion and the formation of micro-cracks). Oil in motorcycles and scooters is required to run under more intense conditions than in cars because it has to endure hotter temperatures as well as higher engine speed and a greater power density. These circumstances subject the oil to significant operating stress.

In 1998 JASO T903 was introduced as the globally recognized standard for 4-stroke motorcycle oils. It defines the required performance levels for satisfactory lubrication of the different motorcycle designs."


If anyone is looking to save cash on Camhead oil, would you use a car oil rather than an expensive, over engineered motorcycle specific oil.
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-10-17 13:19:15
I'm gonna try this next service - https://www.smithandallan.com/products/transport-motorcycle/4556-smith-and-allan-limitless-ultra-4t-10w-40---fully-synthetic-motorcycle-oil/ (https://www.smithandallan.com/products/transport-motorcycle/4556-smith-and-allan-limitless-ultra-4t-10w-40---fully-synthetic-motorcycle-oil/) anyone tried it?

The BMW recommended oil for a 1200 Wethead 2015 is, SAE 5W-40, API SL / JASO MA2.
Title: Re: Sorry, it's another Oil Thread !!
Post by: Old-Git on 2020-10-17 19:59:53
The BMW recommended oil for a 1200 Wethead 2015 is, SAE 5W-40, API SL / JASO MA2.
Yep, the only difference is 5w vs 10w, I'll live with that.
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-11-27 13:04:57
Recently, my attention was brought to Mannol oils, they are German, therefore, it's got to be good, https://www.mannol.de/products/motor-oils-for-motorbikes-and-outboard-engines/motorcycle-oils/4-takt-powerbike

Found it on ebay for £6.99 per litre, https://www.ebay.co.uk/i/254430266110?chn=ps&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=254430266110&targetid=1000147647260&device=c&mktype=pla&googleloc=1007119&poi=&campaignid=10199419126&mkgroupid=101401894545&rlsatarget=pla-1000147647260&abcId=1145984&merchantid=115115833&gclid=EAIaIQobChMI7ev6h9mi7QIVBrDtCh3YzAEqEAQYASABEgJTjfD_BwE
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-11-28 11:56:35
The Camhead is basically the same as a car engine, with a dry clutch & separate gearbox, therefore, fancy expensive motorcycle specific engine oils are not necessarily required.

The Rider's Manual recommends several viscosity ranges, 15W-40 or greater i.e. 50 is one of them. The quoted oil standards are API SF / ACEA A2, or better, no mention of JASO, presumably because it doesn't need a motorcycle specific engine oil.

This OPIE, Car Engine Oil Guide, https://www.opieoils.co.uk/t-a-guide-to-oils.aspx explains the API & ACEA Specifications.
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-11-28 14:59:46
I remember this Castrol Grand Prix being one of the first motorcycle specific engine oils.

(https://thumbs.worthpoint.com/zoom/images1/360/0713/13/vintage-castrol-grand-prix-motorcycle_360_05b60dce360ff1d4a9264bcbe2f1304e.jpg)
Title: Re: Sorry, it's another Oil Thread !!
Post by: Our Gee on 2020-11-29 08:41:17
I remember this Castrol Grand Prix being one of the first motorcycle specific engine oils.

(https://thumbs.worthpoint.com/zoom/images1/360/0713/13/vintage-castrol-grand-prix-motorcycle_360_05b60dce360ff1d4a9264bcbe2f1304e.jpg)


This was the oil I used in my first bike (an AJS Model 14 ). If I remember correctly it was ,or is, a straight SAE 50 grade and poured like golden syrup. It even came in a metal can. Lovely stuff.
Title: Re: Sorry, it's another Oil Thread !!
Post by: David. on 2020-11-29 10:37:50
Looks like we've got Alexander Duckham to thank for the introduction of multigrade oil in 1951, https://www.duckhams.com/history/

(https://www.duckhams.com/wp-content/uploads/2017/11/003-Duckhams-Classic-Q-20W-50-Front.jpg)