While changing his engine oil, Chris Mardon noticed milky oil in his saildrive. Will it have caused damage to the leg? Stu Davies has the answer
engines
How to service a marine engine cooling system
Is your boat's engine beginning to run hotter than normal? It may be time to service the cooling system, suggests Tony Davies
Why an oil test is vital for boat engine health
Gilbert Park and Larry Rumbol explain why regular a regular oil test can increase the life and reliability of your boat engine – and save you money
Can diesel bug fuel treatments work together?
PBO reader Nick Houlding wants to know if different diesel bug fuel treatments can be mixed. Peter Wielde from Marine 16 has the answer
Two years of owning my electric outboard: long term test of the Torqeedo 603
Hamish Southby-Tailyour explains the modifications he’s made to make his Torqeedo 603 electric outboard work better for him
Buying a new or used outboard motor? Professionals share their tips to make sure you avoid the pitfalls
From horsepower to shaft length and tilt-angle to 2- or 4-stroke, Ali Wood highlights the different features you should consider when buying a new or used outboard motor
Why is my outboard so unreliable?
Colin Staple's unreliable outboard is spoiling his sailing. Stu Davies suggests how to improve its performance
Managing E5 and E10 petrol problems
E5 and especially E10 petrol requires much more ‘fuel husbandry’ than older, ethanol-free petrol blends, as Jake Frith has discovered
Can you epoxy repair an aluminium boat heat exchanger?
PBO reader Chris Marden wants to know if he can repair the outer case of his boat heat exchanger with epoxy. Stu Davies has the answer!
Mercury Marine V8 & V6 outboard engines recalled
Certain models of Mercury Marine V8 and V6 outboard engines are being recalled due to a safety risk
Fixing boat engine cooling system problems
Stu Davies solves niggly Volvo Penta 2030 engine cooling problems
Fixing and avoiding marine engine leaks
There is no need to put up with a leaky, smelly inboard engine. By dealing with small leaks as they arise, even the oldest units can be maintained drip-free
How to find an engine oil leak in a Volvo 2002
David Moody is struggling to find the cause of an engine oil leak in his Volvo 2002. Stu Davies has the answer
Raw water pump: rebuild or replace?
PBO reader Clive Hathway has a leaking raw water pump. Should he buy a replacement or rebuild it? Stu Davies gives his advice
How should I look after my fuel to beat diesel bug?
Ali Wood gets some bug-beating advice from Marine 16’s Peter Weide and learns why modern diesel requires more attention than ever
TEMO 1000 electric outboard: first look and test
Ali Wood meets the French team behind the new TEMO 1000, and tests the electric outboard on Southampton Water
Replacing a saildrive gaiter: step by step
After seven years of regular use, a saildrive gaiter should be changed before it deteriorates to let water through the hull, warns Tony Davies
Winterising a boat: 61 point checklist
PBO experts offer their top tips for winterising a boat, helping to keep your vessel and gear in good condition over the colder months
Diesel engine heat exchanger and manifold repair
Barry Pickthall explains how he carried out engine repairs on a budget after a couple of years of Covid-19 lockdown neglect
No mess oil filter change for a boat engine
Simon Westmacott devises a way to keep his bilges clean when changing the engine's oil filter