Para calcular a classificação geral de estrelas e a análise percentual por estrela, não usamos uma média simples. Em vez disso, nosso sistema considera coisas como se uma avaliação é recente e se o avaliador comprou o item na Amazon. Ele também analisa avaliações para verificar a confiabilidade.
for decades we brought our boat to the local marina for general maintenance, oil-changes and fixes. It was just the cost of having a boat. Oil-changes were part of the overall bill and never cheap. After some youtube browsing I came across a guy in Florida showing how oil changes are done on Volvo Penta engines. I could not believe how easy, clean and fast it was. Long story short, I bought the recommended Jabso vacuum extractor pump, the respecitive oil filter from NAPA and oil from Canadian Tire when their Penzoil sale was on. (<30 bucks per 5l, full synthetic premium). Did the oil-change after a few a boat ride, (after another 15+ minutes of cool down time). The pump sucked it out via the dipstick pipe effortless. Be a little careful, the oil is still warm to hot and the pump has a metal housing => pump gets hot as well. after roughly 3 minutes pumping, the oil was out, not a single drop spilled in the boat. Filter change was slightly harder due to the location of the oilfilter on our 4.3GL Volvo. with the right filter crown socket that wasn't too hard either. Pro Tip: Put a ziplock bag over the filter when removing the old one, this catches some oil that is dripping out of the filter when removing. All in all, can highly recommend that pump. Cost is around $80 CAD in most cases.
I bought with the some skepticism, but decided to give it a try to change the oil in my Mercruiser Mag350. It worked so well, I was shocked. As others have mentioned, the hose provided is very hard, stiff and short. Instead of using that, I installed some longer, more flexible hose to reach to empty gallon jugs. The pump easily screws onto the dipstick tube and a couple quick pumps and you are pumping oil. I didnt get any siphon action because the oil pan was lower than the output, but it was still quick and easy. Probably 90 seconds to pump warm engine oil out.
I have a 1994 Cobalt with Volvo Penta 5.7 GI. The drain plug on this engine is in the worst place. I would have to drain it straight into the hull and out the hole in the bottom. This pump directly attaches to the dipstick port and you can pump out the oil cleanly into a canister. It takes a little bit - around 15min, but the dipstick port is easily accessible, the procedure is clean without messes and if you only have to do it once a year this is by far the way to go. The pump looks like it's good quality and will be a good tool over the years.