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| Renton |
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Renton
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| RhynoCZ |
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RhynoCZ
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 Posted: 17:27 - 10 May 2013  Post subject: |
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https://dr650.zenseeker.net/Lubrication/OilChart.png
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| oldbiker |
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oldbiker
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Posted: 19:31 - 10 May 2013  Post subject: |
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fully synthetics are made from alchohols/acid/aldahides etc and are usualy all good. semi synthietics are blended mineral oil/synthetic oil. a little cheaper than fully sytheic.
with an engine oil look at th bottle for the API number this has two parts A*B* the A number is the mechanical properties of the oil ! to 4 the B number is the poluting efects of the oil.
A1B1 is for lawn mowers in china A4B4 is for race engins with greenpeace as engine scrutaneers
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| Wafer_Thin_Ham |
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Wafer_Thin_Ham
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| weasley |
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weasley
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Posted: 22:16 - 10 May 2013  Post subject: |
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| oldbiker wrote: | fully synthetics are made from alchohols/acid/aldahides etc and are usualy all good. semi synthietics are blended mineral oil/synthetic oil. a little cheaper than fully sytheic.
with an engine oil look at th bottle for the API number this has two parts A*B* the A number is the mechanical properties of the oil ! to 4 the B number is the poluting efects of the oil.
A1B1 is for lawn mowers in china A4B4 is for race engins with greenpeace as engine scrutaneers |
Almost all wrong.
Fully synthetics are mostly polyalphaolefins (PAO), which is made using ethylene monomers. Esters are made from acids and alcohols, but are by far a minority base oil.
API (American) specifications are S... and C... grades; S for petrol engines and C for diesel (eg SN, CJ-4). The higher the second letter the more recent the specification.
ACEA (European) specifications use the A*/B* nomenclature, but the numbers are not progressive in terms of age or performance. A is for petrol and B is for diesel (but they must always be combined, so you can't have a petrol-only or diesel-only oil). A1/B1 is a standard performance oil with fuel economy benefits. A4/B4 does not exist. The highest number is A5/B5, which is a long drain, fuel economy specification. The only other possibilities are A3/B3 (std drain, no fuel economy) and A3/B4 (long drain, no fuel economy).
There are also the ACEA Cx categories (C1 to C4), which are reduced SAPS oils to improve compatibility with DPFs and catalytic converters.
TL;DR - you can mix oils ok.
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Old Thread Alert!
The last post was made 13 years, 50 days ago. Instead of replying here, would creating a new thread be more useful? |
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