92KK 84WW Olaf
Life time member
Number of posts : 7955
The oil level can increase on a K for a few reasons:
1: oil/water pump allowing coolant into the oil. Generally you won't notice changes in temperature other than coolant running a bit lower and some mayonnaise.
2: head gasket failure also allowing coolant into the oil but usually also accompanied by some overheating issues and overflowing at the coolant expansion bottle.
3: fuel injector failure allowing petrol into the oil, you will smell it from the oil and notice other running issues. This needs to be watched because if you get a cylinder full of petrol you get hydraulic lock and serious damage.
On the oil pump if it has never been done and it's an early K you will need to replace the impeller and the shaft. There was a nut on the old type and it WILL go wrong on you. Just be careful and patient when you are doing it and keep an eye out after its done. Mine is done 3 years now and not had a problem but the first 2 days there was a small drip that I kept eye on and it stopped. The advice I got when it happened was monitor it and see what happens.
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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles
Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500